1 2 LINUX ALLOCATED DEVICES (2.6+ version) 3 4 Maintained by Alan Cox <device@lanana.org> 5 6 Last revised: 6th April 2009 7 8This list is the Linux Device List, the official registry of allocated 9device numbers and /dev directory nodes for the Linux operating 10system. 11 12The latest version of this list is available from 13http://www.lanana.org/docs/device-list/ or 14ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be 15newer than the one distributed with the Linux kernel. 16 17The LaTeX version of this document is no longer maintained. 18 19This document is included by reference into the Filesystem Hierarchy 20Standard (FHS). The FHS is available from http://www.pathname.com/fhs/. 21 22Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga 23platform only. Allocations marked (68k/Atari) apply to Linux/68k on 24the Atari platform only. 25 26The symbol {2.6} means the allocation is obsolete and scheduled for 27removal once kernel version 2.6 (or equivalent) is released. Some of these 28allocations have already been removed. 29 30This document is in the public domain. The author requests, however, 31that semantically altered versions are not distributed without 32permission of the author, assuming the author can be contacted without 33an unreasonable effort. 34 35In particular, please don't sent patches for this list to Linus, at 36least not without contacting me first. 37 38I do not have any information about these devices beyond what appears 39on this list. Any such information requests will be deleted without 40reply. 41 42 43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS **** 44 45To have a major number allocated, or a minor number in situations 46where that applies (e.g. busmice), please contact me with the 47appropriate device information. Also, if you have additional 48information regarding any of the devices listed below, or if I have 49made a mistake, I would greatly appreciate a note. 50 51I do, however, make a few requests about the nature of your report. 52This is necessary for me to be able to keep this list up to date and 53correct in a timely manner. First of all, *please* send it to the 54correct address... <device@lanana.org>. I receive hundreds of email 55messages a day, so mail sent to other addresses may very well get lost 56in the avalanche. Please put in a descriptive subject, so I can find 57your mail again should I need to. Too many people send me email 58saying just "device number request" in the subject. 59 60Second, please include a description of the device *in the same format 61as this list*. The reason for this is that it is the only way I have 62found to ensure I have all the requisite information to publish your 63device and avoid conflicts. 64 65Third, please don't assume that the distributed version of the list is 66up to date. Due to the number of registrations I have to maintain it 67in "batch mode", so there is likely additional registrations that 68haven't been listed yet. 69 70Fourth, remember that Linux now has extensive support for dynamic allocation 71of device numbering and can use sysfs and udev to handle the naming needs. 72There are still some exceptions in the serial and boot device area. Before 73asking for a device number make sure you actually need one. 74 75Finally, sometimes I have to play "namespace police." Please don't be 76offended. I often get submissions for /dev names that would be bound 77to cause conflicts down the road. I am trying to avoid getting in a 78situation where we would have to suffer an incompatible forward 79change. Therefore, please consult with me *before* you make your 80device names and numbers in any way public, at least to the point 81where it would be at all difficult to get them changed. 82 83Your cooperation is appreciated. 84 85 86 0 Unnamed devices (e.g. non-device mounts) 87 0 = reserved as null device number 88 See block major 144, 145, 146 for expansion areas. 89 90 1 char Memory devices 91 1 = /dev/mem Physical memory access 92 2 = /dev/kmem Kernel virtual memory access 93 3 = /dev/null Null device 94 4 = /dev/port I/O port access 95 5 = /dev/zero Null byte source 96 6 = /dev/core OBSOLETE - replaced by /proc/kcore 97 7 = /dev/full Returns ENOSPC on write 98 8 = /dev/random Nondeterministic random number gen. 99 9 = /dev/urandom Faster, less secure random number gen. 100 10 = /dev/aio Asynchronous I/O notification interface 101 11 = /dev/kmsg Writes to this come out as printk's, reads 102 export the buffered printk records. 103 12 = /dev/oldmem OBSOLETE - replaced by /proc/vmcore 104 105 1 block RAM disk 106 0 = /dev/ram0 First RAM disk 107 1 = /dev/ram1 Second RAM disk 108 ... 109 250 = /dev/initrd Initial RAM disk 110 111 Older kernels had /dev/ramdisk (1, 1) here. 112 /dev/initrd refers to a RAM disk which was preloaded 113 by the boot loader; newer kernels use /dev/ram0 for 114 the initrd. 115 116 2 char Pseudo-TTY masters 117 0 = /dev/ptyp0 First PTY master 118 1 = /dev/ptyp1 Second PTY master 119 ... 120 255 = /dev/ptyef 256th PTY master 121 122 Pseudo-tty's are named as follows: 123 * Masters are "pty", slaves are "tty"; 124 * the fourth letter is one of pqrstuvwxyzabcde indicating 125 the 1st through 16th series of 16 pseudo-ttys each, and 126 * the fifth letter is one of 0123456789abcdef indicating 127 the position within the series. 128 129 These are the old-style (BSD) PTY devices; Unix98 130 devices are on major 128 and above and use the PTY 131 master multiplex (/dev/ptmx) to acquire a PTY on 132 demand. 133 134 2 block Floppy disks 135 0 = /dev/fd0 Controller 0, drive 0, autodetect 136 1 = /dev/fd1 Controller 0, drive 1, autodetect 137 2 = /dev/fd2 Controller 0, drive 2, autodetect 138 3 = /dev/fd3 Controller 0, drive 3, autodetect 139 128 = /dev/fd4 Controller 1, drive 0, autodetect 140 129 = /dev/fd5 Controller 1, drive 1, autodetect 141 130 = /dev/fd6 Controller 1, drive 2, autodetect 142 131 = /dev/fd7 Controller 1, drive 3, autodetect 143 144 To specify format, add to the autodetect device number: 145 0 = /dev/fd? Autodetect format 146 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1) 147 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1) 148 48 = /dev/fd?h410 5.25" 410K in a 1200K drive 149 64 = /dev/fd?h420 5.25" 420K in a 1200K drive 150 24 = /dev/fd?h720 5.25" 720K in a 1200K drive 151 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1) 152 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1) 153 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1) 154 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive 155 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive 156 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1) 157 158 12 = /dev/fd?u360 3.5" 360K Double Density(2) 159 16 = /dev/fd?u720 3.5" 720K Double Density(1) 160 120 = /dev/fd?u800 3.5" 800K Double Density(2) 161 52 = /dev/fd?u820 3.5" 820K Double Density 162 68 = /dev/fd?u830 3.5" 830K Double Density 163 84 = /dev/fd?u1040 3.5" 1040K Double Density(1) 164 88 = /dev/fd?u1120 3.5" 1120K Double Density(1) 165 28 = /dev/fd?u1440 3.5" 1440K High Density(1) 166 124 = /dev/fd?u1600 3.5" 1600K High Density(1) 167 44 = /dev/fd?u1680 3.5" 1680K High Density(3) 168 60 = /dev/fd?u1722 3.5" 1722K High Density 169 76 = /dev/fd?u1743 3.5" 1743K High Density 170 96 = /dev/fd?u1760 3.5" 1760K High Density 171 116 = /dev/fd?u1840 3.5" 1840K High Density(3) 172 100 = /dev/fd?u1920 3.5" 1920K High Density(1) 173 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1) 174 104 = /dev/fd?u3200 3.5" 3200K Extra Density 175 108 = /dev/fd?u3520 3.5" 3520K Extra Density 176 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1) 177 178 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete? 179 180 (1) Autodetectable format 181 (2) Autodetectable format in a Double Density (720K) drive only 182 (3) Autodetectable format in a High Density (1440K) drive only 183 184 NOTE: The letter in the device name (d, q, h or u) 185 signifies the type of drive: 5.25" Double Density (d), 186 5.25" Quad Density (q), 5.25" High Density (h) or 3.5" 187 (any model, u). The use of the capital letters D, H 188 and E for the 3.5" models have been deprecated, since 189 the drive type is insignificant for these devices. 190 191 3 char Pseudo-TTY slaves 192 0 = /dev/ttyp0 First PTY slave 193 1 = /dev/ttyp1 Second PTY slave 194 ... 195 255 = /dev/ttyef 256th PTY slave 196 197 These are the old-style (BSD) PTY devices; Unix98 198 devices are on major 136 and above. 199 200 3 block First MFM, RLL and IDE hard disk/CD-ROM interface 201 0 = /dev/hda Master: whole disk (or CD-ROM) 202 64 = /dev/hdb Slave: whole disk (or CD-ROM) 203 204 For partitions, add to the whole disk device number: 205 0 = /dev/hd? Whole disk 206 1 = /dev/hd?1 First partition 207 2 = /dev/hd?2 Second partition 208 ... 209 63 = /dev/hd?63 63rd partition 210 211 For Linux/i386, partitions 1-4 are the primary 212 partitions, and 5 and above are logical partitions. 213 Other versions of Linux use partitioning schemes 214 appropriate to their respective architectures. 215 216 4 char TTY devices 217 0 = /dev/tty0 Current virtual console 218 219 1 = /dev/tty1 First virtual console 220 ... 221 63 = /dev/tty63 63rd virtual console 222 64 = /dev/ttyS0 First UART serial port 223 ... 224 255 = /dev/ttyS191 192nd UART serial port 225 226 UART serial ports refer to 8250/16450/16550 series devices. 227 228 Older versions of the Linux kernel used this major 229 number for BSD PTY devices. As of Linux 2.1.115, this 230 is no longer supported. Use major numbers 2 and 3. 231 232 4 block Aliases for dynamically allocated major devices to be used 233 when its not possible to create the real device nodes 234 because the root filesystem is mounted read-only. 235 236 0 = /dev/root 237 238 5 char Alternate TTY devices 239 0 = /dev/tty Current TTY device 240 1 = /dev/console System console 241 2 = /dev/ptmx PTY master multiplex 242 3 = /dev/ttyprintk User messages via printk TTY device 243 64 = /dev/cua0 Callout device for ttyS0 244 ... 245 255 = /dev/cua191 Callout device for ttyS191 246 247 (5,1) is /dev/console starting with Linux 2.1.71. See 248 the section on terminal devices for more information 249 on /dev/console. 250 251 6 char Parallel printer devices 252 0 = /dev/lp0 Parallel printer on parport0 253 1 = /dev/lp1 Parallel printer on parport1 254 ... 255 256 Current Linux kernels no longer have a fixed mapping 257 between parallel ports and I/O addresses. Instead, 258 they are redirected through the parport multiplex layer. 259 260 7 char Virtual console capture devices 261 0 = /dev/vcs Current vc text contents 262 1 = /dev/vcs1 tty1 text contents 263 ... 264 63 = /dev/vcs63 tty63 text contents 265 128 = /dev/vcsa Current vc text/attribute contents 266 129 = /dev/vcsa1 tty1 text/attribute contents 267 ... 268 191 = /dev/vcsa63 tty63 text/attribute contents 269 270 NOTE: These devices permit both read and write access. 271 272 7 block Loopback devices 273 0 = /dev/loop0 First loop device 274 1 = /dev/loop1 Second loop device 275 ... 276 277 The loop devices are used to mount filesystems not 278 associated with block devices. The binding to the 279 loop devices is handled by mount(8) or losetup(8). 280 281 8 block SCSI disk devices (0-15) 282 0 = /dev/sda First SCSI disk whole disk 283 16 = /dev/sdb Second SCSI disk whole disk 284 32 = /dev/sdc Third SCSI disk whole disk 285 ... 286 240 = /dev/sdp Sixteenth SCSI disk whole disk 287 288 Partitions are handled in the same way as for IDE 289 disks (see major number 3) except that the limit on 290 partitions is 15. 291 292 9 char SCSI tape devices 293 0 = /dev/st0 First SCSI tape, mode 0 294 1 = /dev/st1 Second SCSI tape, mode 0 295 ... 296 32 = /dev/st0l First SCSI tape, mode 1 297 33 = /dev/st1l Second SCSI tape, mode 1 298 ... 299 64 = /dev/st0m First SCSI tape, mode 2 300 65 = /dev/st1m Second SCSI tape, mode 2 301 ... 302 96 = /dev/st0a First SCSI tape, mode 3 303 97 = /dev/st1a Second SCSI tape, mode 3 304 ... 305 128 = /dev/nst0 First SCSI tape, mode 0, no rewind 306 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind 307 ... 308 160 = /dev/nst0l First SCSI tape, mode 1, no rewind 309 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind 310 ... 311 192 = /dev/nst0m First SCSI tape, mode 2, no rewind 312 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind 313 ... 314 224 = /dev/nst0a First SCSI tape, mode 3, no rewind 315 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind 316 ... 317 318 "No rewind" refers to the omission of the default 319 automatic rewind on device close. The MTREW or MTOFFL 320 ioctl()'s can be used to rewind the tape regardless of 321 the device used to access it. 322 323 9 block Metadisk (RAID) devices 324 0 = /dev/md0 First metadisk group 325 1 = /dev/md1 Second metadisk group 326 ... 327 328 The metadisk driver is used to span a 329 filesystem across multiple physical disks. 330 331 10 char Non-serial mice, misc features 332 0 = /dev/logibm Logitech bus mouse 333 1 = /dev/psaux PS/2-style mouse port 334 2 = /dev/inportbm Microsoft Inport bus mouse 335 3 = /dev/atibm ATI XL bus mouse 336 4 = /dev/jbm J-mouse 337 4 = /dev/amigamouse Amiga mouse (68k/Amiga) 338 5 = /dev/atarimouse Atari mouse 339 6 = /dev/sunmouse Sun mouse 340 7 = /dev/amigamouse1 Second Amiga mouse 341 8 = /dev/smouse Simple serial mouse driver 342 9 = /dev/pc110pad IBM PC-110 digitizer pad 343 10 = /dev/adbmouse Apple Desktop Bus mouse 344 11 = /dev/vrtpanel Vr41xx embedded touch panel 345 13 = /dev/vpcmouse Connectix Virtual PC Mouse 346 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen 347 15 = /dev/touchscreen/mk712 MK712 touchscreen 348 128 = /dev/beep Fancy beep device 349 129 = 350 130 = /dev/watchdog Watchdog timer port 351 131 = /dev/temperature Machine internal temperature 352 132 = /dev/hwtrap Hardware fault trap 353 133 = /dev/exttrp External device trap 354 134 = /dev/apm_bios Advanced Power Management BIOS 355 135 = /dev/rtc Real Time Clock 356 137 = /dev/vhci Bluetooth virtual HCI driver 357 139 = /dev/openprom SPARC OpenBoot PROM 358 140 = /dev/relay8 Berkshire Products Octal relay card 359 141 = /dev/relay16 Berkshire Products ISO-16 relay card 360 142 = 361 143 = /dev/pciconf PCI configuration space 362 144 = /dev/nvram Non-volatile configuration RAM 363 145 = /dev/hfmodem Soundcard shortwave modem control 364 146 = /dev/graphics Linux/SGI graphics device 365 147 = /dev/opengl Linux/SGI OpenGL pipe 366 148 = /dev/gfx Linux/SGI graphics effects device 367 149 = /dev/input/mouse Linux/SGI Irix emulation mouse 368 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard 369 151 = /dev/led Front panel LEDs 370 152 = /dev/kpoll Kernel Poll Driver 371 153 = /dev/mergemem Memory merge device 372 154 = /dev/pmu Macintosh PowerBook power manager 373 155 = /dev/isictl MultiTech ISICom serial control 374 156 = /dev/lcd Front panel LCD display 375 157 = /dev/ac Applicom Intl Profibus card 376 158 = /dev/nwbutton Netwinder external button 377 159 = /dev/nwdebug Netwinder debug interface 378 160 = /dev/nwflash Netwinder flash memory 379 161 = /dev/userdma User-space DMA access 380 162 = /dev/smbus System Management Bus 381 163 = /dev/lik Logitech Internet Keyboard 382 164 = /dev/ipmo Intel Intelligent Platform Management 383 165 = /dev/vmmon VMware virtual machine monitor 384 166 = /dev/i2o/ctl I2O configuration manager 385 167 = /dev/specialix_sxctl Specialix serial control 386 168 = /dev/tcldrv Technology Concepts serial control 387 169 = /dev/specialix_rioctl Specialix RIO serial control 388 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices 389 171 = /dev/srripc QNX4 API IPC manager 390 172 = /dev/usemaclone Semaphore clone device 391 173 = /dev/ipmikcs Intelligent Platform Management 392 174 = /dev/uctrl SPARCbook 3 microcontroller 393 175 = /dev/agpgart AGP Graphics Address Remapping Table 394 176 = /dev/gtrsc Gorgy Timing radio clock 395 177 = /dev/cbm Serial CBM bus 396 178 = /dev/jsflash JavaStation OS flash SIMM 397 179 = /dev/xsvc High-speed shared-mem/semaphore service 398 180 = /dev/vrbuttons Vr41xx button input device 399 181 = /dev/toshiba Toshiba laptop SMM support 400 182 = /dev/perfctr Performance-monitoring counters 401 183 = /dev/hwrng Generic random number generator 402 184 = /dev/cpu/microcode CPU microcode update interface 403 186 = /dev/atomicps Atomic shapshot of process state data 404 187 = /dev/irnet IrNET device 405 188 = /dev/smbusbios SMBus BIOS 406 189 = /dev/ussp_ctl User space serial port control 407 190 = /dev/crash Mission Critical Linux crash dump facility 408 191 = /dev/pcl181 <information missing> 409 192 = /dev/nas_xbus NAS xbus LCD/buttons access 410 193 = /dev/d7s SPARC 7-segment display 411 194 = /dev/zkshim Zero-Knowledge network shim control 412 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201 413 196 = /dev/vfio/vfio VFIO userspace driver interface 414 197 = /dev/pxa3xx-gcu PXA3xx graphics controller unit driver 415 198 = /dev/sexec Signed executable interface 416 199 = /dev/scanners/cuecat :CueCat barcode scanner 417 200 = /dev/net/tun TAP/TUN network device 418 201 = /dev/button/gulpb Transmeta GULP-B buttons 419 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control 420 203 = /dev/cuse Cuse (character device in user-space) 421 204 = /dev/video/em8300 EM8300 DVD decoder control 422 205 = /dev/video/em8300_mv EM8300 DVD decoder video 423 206 = /dev/video/em8300_ma EM8300 DVD decoder audio 424 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture 425 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller 426 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver 427 210 = /dev/impi/bt IMPI coprocessor block transfer 428 211 = /dev/impi/smic IMPI coprocessor stream interface 429 212 = /dev/watchdogs/0 First watchdog device 430 213 = /dev/watchdogs/1 Second watchdog device 431 214 = /dev/watchdogs/2 Third watchdog device 432 215 = /dev/watchdogs/3 Fourth watchdog device 433 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel 434 217 = /dev/ni/natmotn National Instruments Motion 435 218 = /dev/kchuid Inter-process chuid control 436 219 = /dev/modems/mwave MWave modem firmware upload 437 220 = /dev/mptctl Message passing technology (MPT) control 438 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver 439 222 = /dev/mvista/hasi Montavista PICMG high availability 440 223 = /dev/input/uinput User level driver support for input 441 224 = /dev/tpm TCPA TPM driver 442 225 = /dev/pps Pulse Per Second driver 443 226 = /dev/systrace Systrace device 444 227 = /dev/mcelog X86_64 Machine Check Exception driver 445 228 = /dev/hpet HPET driver 446 229 = /dev/fuse Fuse (virtual filesystem in user-space) 447 230 = /dev/midishare MidiShare driver 448 231 = /dev/snapshot System memory snapshot device 449 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions) 450 233 = /dev/kmview View-OS A process with a view 451 234 = /dev/btrfs-control Btrfs control device 452 235 = /dev/autofs Autofs control device 453 236 = /dev/mapper/control Device-Mapper control device 454 237 = /dev/loop-control Loopback control device 455 238 = /dev/vhost-net Host kernel accelerator for virtio net 456 239 = /dev/uhid User-space I/O driver support for HID subsystem 457 458 240-254 Reserved for local use 459 255 Reserved for MISC_DYNAMIC_MINOR 460 461 11 char Raw keyboard device (Linux/SPARC only) 462 0 = /dev/kbd Raw keyboard device 463 464 11 char Serial Mux device (Linux/PA-RISC only) 465 0 = /dev/ttyB0 First mux port 466 1 = /dev/ttyB1 Second mux port 467 ... 468 469 11 block SCSI CD-ROM devices 470 0 = /dev/scd0 First SCSI CD-ROM 471 1 = /dev/scd1 Second SCSI CD-ROM 472 ... 473 474 The prefix /dev/sr (instead of /dev/scd) has been deprecated. 475 476 12 char QIC-02 tape 477 2 = /dev/ntpqic11 QIC-11, no rewind-on-close 478 3 = /dev/tpqic11 QIC-11, rewind-on-close 479 4 = /dev/ntpqic24 QIC-24, no rewind-on-close 480 5 = /dev/tpqic24 QIC-24, rewind-on-close 481 6 = /dev/ntpqic120 QIC-120, no rewind-on-close 482 7 = /dev/tpqic120 QIC-120, rewind-on-close 483 8 = /dev/ntpqic150 QIC-150, no rewind-on-close 484 9 = /dev/tpqic150 QIC-150, rewind-on-close 485 486 The device names specified are proposed -- if there 487 are "standard" names for these devices, please let me know. 488 489 12 block 490 491 13 char Input core 492 0 = /dev/input/js0 First joystick 493 1 = /dev/input/js1 Second joystick 494 ... 495 32 = /dev/input/mouse0 First mouse 496 33 = /dev/input/mouse1 Second mouse 497 ... 498 63 = /dev/input/mice Unified mouse 499 64 = /dev/input/event0 First event queue 500 65 = /dev/input/event1 Second event queue 501 ... 502 503 Each device type has 5 bits (32 minors). 504 505 13 block Previously used for the XT disk (/dev/xdN) 506 Deleted in kernel v3.9. 507 508 14 char Open Sound System (OSS) 509 0 = /dev/mixer Mixer control 510 1 = /dev/sequencer Audio sequencer 511 2 = /dev/midi00 First MIDI port 512 3 = /dev/dsp Digital audio 513 4 = /dev/audio Sun-compatible digital audio 514 6 = 515 7 = /dev/audioctl SPARC audio control device 516 8 = /dev/sequencer2 Sequencer -- alternate device 517 16 = /dev/mixer1 Second soundcard mixer control 518 17 = /dev/patmgr0 Sequencer patch manager 519 18 = /dev/midi01 Second MIDI port 520 19 = /dev/dsp1 Second soundcard digital audio 521 20 = /dev/audio1 Second soundcard Sun digital audio 522 33 = /dev/patmgr1 Sequencer patch manager 523 34 = /dev/midi02 Third MIDI port 524 50 = /dev/midi03 Fourth MIDI port 525 526 14 block 527 528 15 char Joystick 529 0 = /dev/js0 First analog joystick 530 1 = /dev/js1 Second analog joystick 531 ... 532 128 = /dev/djs0 First digital joystick 533 129 = /dev/djs1 Second digital joystick 534 ... 535 15 block Sony CDU-31A/CDU-33A CD-ROM 536 0 = /dev/sonycd Sony CDU-31a CD-ROM 537 538 16 char Non-SCSI scanners 539 0 = /dev/gs4500 Genius 4500 handheld scanner 540 541 16 block GoldStar CD-ROM 542 0 = /dev/gscd GoldStar CD-ROM 543 544 17 char OBSOLETE (was Chase serial card) 545 0 = /dev/ttyH0 First Chase port 546 1 = /dev/ttyH1 Second Chase port 547 ... 548 17 block Optics Storage CD-ROM 549 0 = /dev/optcd Optics Storage CD-ROM 550 551 18 char OBSOLETE (was Chase serial card - alternate devices) 552 0 = /dev/cuh0 Callout device for ttyH0 553 1 = /dev/cuh1 Callout device for ttyH1 554 ... 555 18 block Sanyo CD-ROM 556 0 = /dev/sjcd Sanyo CD-ROM 557 558 19 char Cyclades serial card 559 0 = /dev/ttyC0 First Cyclades port 560 ... 561 31 = /dev/ttyC31 32nd Cyclades port 562 563 19 block "Double" compressed disk 564 0 = /dev/double0 First compressed disk 565 ... 566 7 = /dev/double7 Eighth compressed disk 567 128 = /dev/cdouble0 Mirror of first compressed disk 568 ... 569 135 = /dev/cdouble7 Mirror of eighth compressed disk 570 571 See the Double documentation for the meaning of the 572 mirror devices. 573 574 20 char Cyclades serial card - alternate devices 575 0 = /dev/cub0 Callout device for ttyC0 576 ... 577 31 = /dev/cub31 Callout device for ttyC31 578 579 20 block Hitachi CD-ROM (under development) 580 0 = /dev/hitcd Hitachi CD-ROM 581 582 21 char Generic SCSI access 583 0 = /dev/sg0 First generic SCSI device 584 1 = /dev/sg1 Second generic SCSI device 585 ... 586 587 Most distributions name these /dev/sga, /dev/sgb...; 588 this sets an unnecessary limit of 26 SCSI devices in 589 the system and is counter to standard Linux 590 device-naming practice. 591 592 21 block Acorn MFM hard drive interface 593 0 = /dev/mfma First MFM drive whole disk 594 64 = /dev/mfmb Second MFM drive whole disk 595 596 This device is used on the ARM-based Acorn RiscPC. 597 Partitions are handled the same way as for IDE disks 598 (see major number 3). 599 600 22 char Digiboard serial card 601 0 = /dev/ttyD0 First Digiboard port 602 1 = /dev/ttyD1 Second Digiboard port 603 ... 604 22 block Second IDE hard disk/CD-ROM interface 605 0 = /dev/hdc Master: whole disk (or CD-ROM) 606 64 = /dev/hdd Slave: whole disk (or CD-ROM) 607 608 Partitions are handled the same way as for the first 609 interface (see major number 3). 610 611 23 char Digiboard serial card - alternate devices 612 0 = /dev/cud0 Callout device for ttyD0 613 1 = /dev/cud1 Callout device for ttyD1 614 ... 615 23 block Mitsumi proprietary CD-ROM 616 0 = /dev/mcd Mitsumi CD-ROM 617 618 24 char Stallion serial card 619 0 = /dev/ttyE0 Stallion port 0 card 0 620 1 = /dev/ttyE1 Stallion port 1 card 0 621 ... 622 64 = /dev/ttyE64 Stallion port 0 card 1 623 65 = /dev/ttyE65 Stallion port 1 card 1 624 ... 625 128 = /dev/ttyE128 Stallion port 0 card 2 626 129 = /dev/ttyE129 Stallion port 1 card 2 627 ... 628 192 = /dev/ttyE192 Stallion port 0 card 3 629 193 = /dev/ttyE193 Stallion port 1 card 3 630 ... 631 24 block Sony CDU-535 CD-ROM 632 0 = /dev/cdu535 Sony CDU-535 CD-ROM 633 634 25 char Stallion serial card - alternate devices 635 0 = /dev/cue0 Callout device for ttyE0 636 1 = /dev/cue1 Callout device for ttyE1 637 ... 638 64 = /dev/cue64 Callout device for ttyE64 639 65 = /dev/cue65 Callout device for ttyE65 640 ... 641 128 = /dev/cue128 Callout device for ttyE128 642 129 = /dev/cue129 Callout device for ttyE129 643 ... 644 192 = /dev/cue192 Callout device for ttyE192 645 193 = /dev/cue193 Callout device for ttyE193 646 ... 647 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM 648 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0 649 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1 650 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2 651 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3 652 653 26 char 654 655 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM 656 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0 657 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1 658 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2 659 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3 660 661 27 char QIC-117 tape 662 0 = /dev/qft0 Unit 0, rewind-on-close 663 1 = /dev/qft1 Unit 1, rewind-on-close 664 2 = /dev/qft2 Unit 2, rewind-on-close 665 3 = /dev/qft3 Unit 3, rewind-on-close 666 4 = /dev/nqft0 Unit 0, no rewind-on-close 667 5 = /dev/nqft1 Unit 1, no rewind-on-close 668 6 = /dev/nqft2 Unit 2, no rewind-on-close 669 7 = /dev/nqft3 Unit 3, no rewind-on-close 670 16 = /dev/zqft0 Unit 0, rewind-on-close, compression 671 17 = /dev/zqft1 Unit 1, rewind-on-close, compression 672 18 = /dev/zqft2 Unit 2, rewind-on-close, compression 673 19 = /dev/zqft3 Unit 3, rewind-on-close, compression 674 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression 675 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression 676 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression 677 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression 678 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks 679 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks 680 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks 681 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks 682 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks 683 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks 684 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks 685 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks 686 687 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM 688 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0 689 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1 690 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2 691 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3 692 693 28 char Stallion serial card - card programming 694 0 = /dev/staliomem0 First Stallion card I/O memory 695 1 = /dev/staliomem1 Second Stallion card I/O memory 696 2 = /dev/staliomem2 Third Stallion card I/O memory 697 3 = /dev/staliomem3 Fourth Stallion card I/O memory 698 699 28 char Atari SLM ACSI laser printer (68k/Atari) 700 0 = /dev/slm0 First SLM laser printer 701 1 = /dev/slm1 Second SLM laser printer 702 ... 703 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM 704 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0 705 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1 706 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2 707 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3 708 709 28 block ACSI disk (68k/Atari) 710 0 = /dev/ada First ACSI disk whole disk 711 16 = /dev/adb Second ACSI disk whole disk 712 32 = /dev/adc Third ACSI disk whole disk 713 ... 714 240 = /dev/adp 16th ACSI disk whole disk 715 716 Partitions are handled in the same way as for IDE 717 disks (see major number 3) except that the limit on 718 partitions is 15, like SCSI. 719 720 29 char Universal frame buffer 721 0 = /dev/fb0 First frame buffer 722 1 = /dev/fb1 Second frame buffer 723 ... 724 31 = /dev/fb31 32nd frame buffer 725 726 29 block Aztech/Orchid/Okano/Wearnes CD-ROM 727 0 = /dev/aztcd Aztech CD-ROM 728 729 30 char iBCS-2 compatibility devices 730 0 = /dev/socksys Socket access 731 1 = /dev/spx SVR3 local X interface 732 32 = /dev/inet/ip Network access 733 33 = /dev/inet/icmp 734 34 = /dev/inet/ggp 735 35 = /dev/inet/ipip 736 36 = /dev/inet/tcp 737 37 = /dev/inet/egp 738 38 = /dev/inet/pup 739 39 = /dev/inet/udp 740 40 = /dev/inet/idp 741 41 = /dev/inet/rawip 742 743 Additionally, iBCS-2 requires the following links: 744 745 /dev/ip -> /dev/inet/ip 746 /dev/icmp -> /dev/inet/icmp 747 /dev/ggp -> /dev/inet/ggp 748 /dev/ipip -> /dev/inet/ipip 749 /dev/tcp -> /dev/inet/tcp 750 /dev/egp -> /dev/inet/egp 751 /dev/pup -> /dev/inet/pup 752 /dev/udp -> /dev/inet/udp 753 /dev/idp -> /dev/inet/idp 754 /dev/rawip -> /dev/inet/rawip 755 /dev/inet/arp -> /dev/inet/udp 756 /dev/inet/rip -> /dev/inet/udp 757 /dev/nfsd -> /dev/socksys 758 /dev/X0R -> /dev/null (? apparently not required ?) 759 760 30 block Philips LMS CM-205 CD-ROM 761 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM 762 763 /dev/lmscd is an older name for this device. This 764 driver does not work with the CM-205MS CD-ROM. 765 766 31 char MPU-401 MIDI 767 0 = /dev/mpu401data MPU-401 data port 768 1 = /dev/mpu401stat MPU-401 status port 769 770 31 block ROM/flash memory card 771 0 = /dev/rom0 First ROM card (rw) 772 ... 773 7 = /dev/rom7 Eighth ROM card (rw) 774 8 = /dev/rrom0 First ROM card (ro) 775 ... 776 15 = /dev/rrom7 Eighth ROM card (ro) 777 16 = /dev/flash0 First flash memory card (rw) 778 ... 779 23 = /dev/flash7 Eighth flash memory card (rw) 780 24 = /dev/rflash0 First flash memory card (ro) 781 ... 782 31 = /dev/rflash7 Eighth flash memory card (ro) 783 784 The read-write (rw) devices support back-caching 785 written data in RAM, as well as writing to flash RAM 786 devices. The read-only devices (ro) support reading 787 only. 788 789 32 char Specialix serial card 790 0 = /dev/ttyX0 First Specialix port 791 1 = /dev/ttyX1 Second Specialix port 792 ... 793 32 block Philips LMS CM-206 CD-ROM 794 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM 795 796 33 char Specialix serial card - alternate devices 797 0 = /dev/cux0 Callout device for ttyX0 798 1 = /dev/cux1 Callout device for ttyX1 799 ... 800 33 block Third IDE hard disk/CD-ROM interface 801 0 = /dev/hde Master: whole disk (or CD-ROM) 802 64 = /dev/hdf Slave: whole disk (or CD-ROM) 803 804 Partitions are handled the same way as for the first 805 interface (see major number 3). 806 807 34 char Z8530 HDLC driver 808 0 = /dev/scc0 First Z8530, first port 809 1 = /dev/scc1 First Z8530, second port 810 2 = /dev/scc2 Second Z8530, first port 811 3 = /dev/scc3 Second Z8530, second port 812 ... 813 814 In a previous version these devices were named 815 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so 816 on. 817 818 34 block Fourth IDE hard disk/CD-ROM interface 819 0 = /dev/hdg Master: whole disk (or CD-ROM) 820 64 = /dev/hdh Slave: whole disk (or CD-ROM) 821 822 Partitions are handled the same way as for the first 823 interface (see major number 3). 824 825 35 char tclmidi MIDI driver 826 0 = /dev/midi0 First MIDI port, kernel timed 827 1 = /dev/midi1 Second MIDI port, kernel timed 828 2 = /dev/midi2 Third MIDI port, kernel timed 829 3 = /dev/midi3 Fourth MIDI port, kernel timed 830 64 = /dev/rmidi0 First MIDI port, untimed 831 65 = /dev/rmidi1 Second MIDI port, untimed 832 66 = /dev/rmidi2 Third MIDI port, untimed 833 67 = /dev/rmidi3 Fourth MIDI port, untimed 834 128 = /dev/smpte0 First MIDI port, SMPTE timed 835 129 = /dev/smpte1 Second MIDI port, SMPTE timed 836 130 = /dev/smpte2 Third MIDI port, SMPTE timed 837 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed 838 839 35 block Slow memory ramdisk 840 0 = /dev/slram Slow memory ramdisk 841 842 36 char Netlink support 843 0 = /dev/route Routing, device updates, kernel to user 844 1 = /dev/skip enSKIP security cache control 845 3 = /dev/fwmonitor Firewall packet copies 846 16 = /dev/tap0 First Ethertap device 847 ... 848 31 = /dev/tap15 16th Ethertap device 849 850 36 block OBSOLETE (was MCA ESDI hard disk) 851 852 37 char IDE tape 853 0 = /dev/ht0 First IDE tape 854 1 = /dev/ht1 Second IDE tape 855 ... 856 128 = /dev/nht0 First IDE tape, no rewind-on-close 857 129 = /dev/nht1 Second IDE tape, no rewind-on-close 858 ... 859 860 Currently, only one IDE tape drive is supported. 861 862 37 block Zorro II ramdisk 863 0 = /dev/z2ram Zorro II ramdisk 864 865 38 char Myricom PCI Myrinet board 866 0 = /dev/mlanai0 First Myrinet board 867 1 = /dev/mlanai1 Second Myrinet board 868 ... 869 870 This device is used for status query, board control 871 and "user level packet I/O." This board is also 872 accessible as a standard networking "eth" device. 873 874 38 block OBSOLETE (was Linux/AP+) 875 876 39 char ML-16P experimental I/O board 877 0 = /dev/ml16pa-a0 First card, first analog channel 878 1 = /dev/ml16pa-a1 First card, second analog channel 879 ... 880 15 = /dev/ml16pa-a15 First card, 16th analog channel 881 16 = /dev/ml16pa-d First card, digital lines 882 17 = /dev/ml16pa-c0 First card, first counter/timer 883 18 = /dev/ml16pa-c1 First card, second counter/timer 884 19 = /dev/ml16pa-c2 First card, third counter/timer 885 32 = /dev/ml16pb-a0 Second card, first analog channel 886 33 = /dev/ml16pb-a1 Second card, second analog channel 887 ... 888 47 = /dev/ml16pb-a15 Second card, 16th analog channel 889 48 = /dev/ml16pb-d Second card, digital lines 890 49 = /dev/ml16pb-c0 Second card, first counter/timer 891 50 = /dev/ml16pb-c1 Second card, second counter/timer 892 51 = /dev/ml16pb-c2 Second card, third counter/timer 893 ... 894 39 block 895 896 40 char 897 898 40 block 899 900 41 char Yet Another Micro Monitor 901 0 = /dev/yamm Yet Another Micro Monitor 902 903 41 block 904 905 42 char Demo/sample use 906 907 42 block Demo/sample use 908 909 This number is intended for use in sample code, as 910 well as a general "example" device number. It 911 should never be used for a device driver that is being 912 distributed; either obtain an official number or use 913 the local/experimental range. The sudden addition or 914 removal of a driver with this number should not cause 915 ill effects to the system (bugs excepted.) 916 917 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A 918 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT. 919 920 43 char isdn4linux virtual modem 921 0 = /dev/ttyI0 First virtual modem 922 ... 923 63 = /dev/ttyI63 64th virtual modem 924 925 43 block Network block devices 926 0 = /dev/nb0 First network block device 927 1 = /dev/nb1 Second network block device 928 ... 929 930 Network Block Device is somehow similar to loopback 931 devices: If you read from it, it sends packet across 932 network asking server for data. If you write to it, it 933 sends packet telling server to write. It could be used 934 to mounting filesystems over the net, swapping over 935 the net, implementing block device in userland etc. 936 937 44 char isdn4linux virtual modem - alternate devices 938 0 = /dev/cui0 Callout device for ttyI0 939 ... 940 63 = /dev/cui63 Callout device for ttyI63 941 942 44 block Flash Translation Layer (FTL) filesystems 943 0 = /dev/ftla FTL on first Memory Technology Device 944 16 = /dev/ftlb FTL on second Memory Technology Device 945 32 = /dev/ftlc FTL on third Memory Technology Device 946 ... 947 240 = /dev/ftlp FTL on 16th Memory Technology Device 948 949 Partitions are handled in the same way as for IDE 950 disks (see major number 3) except that the partition 951 limit is 15 rather than 63 per disk (same as SCSI.) 952 953 45 char isdn4linux ISDN BRI driver 954 0 = /dev/isdn0 First virtual B channel raw data 955 ... 956 63 = /dev/isdn63 64th virtual B channel raw data 957 64 = /dev/isdnctrl0 First channel control/debug 958 ... 959 127 = /dev/isdnctrl63 64th channel control/debug 960 961 128 = /dev/ippp0 First SyncPPP device 962 ... 963 191 = /dev/ippp63 64th SyncPPP device 964 965 255 = /dev/isdninfo ISDN monitor interface 966 967 45 block Parallel port IDE disk devices 968 0 = /dev/pda First parallel port IDE disk 969 16 = /dev/pdb Second parallel port IDE disk 970 32 = /dev/pdc Third parallel port IDE disk 971 48 = /dev/pdd Fourth parallel port IDE disk 972 973 Partitions are handled in the same way as for IDE 974 disks (see major number 3) except that the partition 975 limit is 15 rather than 63 per disk. 976 977 46 char Comtrol Rocketport serial card 978 0 = /dev/ttyR0 First Rocketport port 979 1 = /dev/ttyR1 Second Rocketport port 980 ... 981 46 block Parallel port ATAPI CD-ROM devices 982 0 = /dev/pcd0 First parallel port ATAPI CD-ROM 983 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM 984 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM 985 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM 986 987 47 char Comtrol Rocketport serial card - alternate devices 988 0 = /dev/cur0 Callout device for ttyR0 989 1 = /dev/cur1 Callout device for ttyR1 990 ... 991 47 block Parallel port ATAPI disk devices 992 0 = /dev/pf0 First parallel port ATAPI disk 993 1 = /dev/pf1 Second parallel port ATAPI disk 994 2 = /dev/pf2 Third parallel port ATAPI disk 995 3 = /dev/pf3 Fourth parallel port ATAPI disk 996 997 This driver is intended for floppy disks and similar 998 devices and hence does not support partitioning. 999 1000 48 char SDL RISCom serial card 1001 0 = /dev/ttyL0 First RISCom port 1002 1 = /dev/ttyL1 Second RISCom port 1003 ... 1004 48 block Mylex DAC960 PCI RAID controller; first controller 1005 0 = /dev/rd/c0d0 First disk, whole disk 1006 8 = /dev/rd/c0d1 Second disk, whole disk 1007 ... 1008 248 = /dev/rd/c0d31 32nd disk, whole disk 1009 1010 For partitions add: 1011 0 = /dev/rd/c?d? Whole disk 1012 1 = /dev/rd/c?d?p1 First partition 1013 ... 1014 7 = /dev/rd/c?d?p7 Seventh partition 1015 1016 49 char SDL RISCom serial card - alternate devices 1017 0 = /dev/cul0 Callout device for ttyL0 1018 1 = /dev/cul1 Callout device for ttyL1 1019 ... 1020 49 block Mylex DAC960 PCI RAID controller; second controller 1021 0 = /dev/rd/c1d0 First disk, whole disk 1022 8 = /dev/rd/c1d1 Second disk, whole disk 1023 ... 1024 248 = /dev/rd/c1d31 32nd disk, whole disk 1025 1026 Partitions are handled as for major 48. 1027 1028 50 char Reserved for GLINT 1029 1030 50 block Mylex DAC960 PCI RAID controller; third controller 1031 0 = /dev/rd/c2d0 First disk, whole disk 1032 8 = /dev/rd/c2d1 Second disk, whole disk 1033 ... 1034 248 = /dev/rd/c2d31 32nd disk, whole disk 1035 1036 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem 1037 0 = /dev/bc0 First Baycom radio modem 1038 1 = /dev/bc1 Second Baycom radio modem 1039 ... 1040 51 block Mylex DAC960 PCI RAID controller; fourth controller 1041 0 = /dev/rd/c3d0 First disk, whole disk 1042 8 = /dev/rd/c3d1 Second disk, whole disk 1043 ... 1044 248 = /dev/rd/c3d31 32nd disk, whole disk 1045 1046 Partitions are handled as for major 48. 1047 1048 52 char Spellcaster DataComm/BRI ISDN card 1049 0 = /dev/dcbri0 First DataComm card 1050 1 = /dev/dcbri1 Second DataComm card 1051 2 = /dev/dcbri2 Third DataComm card 1052 3 = /dev/dcbri3 Fourth DataComm card 1053 1054 52 block Mylex DAC960 PCI RAID controller; fifth controller 1055 0 = /dev/rd/c4d0 First disk, whole disk 1056 8 = /dev/rd/c4d1 Second disk, whole disk 1057 ... 1058 248 = /dev/rd/c4d31 32nd disk, whole disk 1059 1060 Partitions are handled as for major 48. 1061 1062 53 char BDM interface for remote debugging MC683xx microcontrollers 1063 0 = /dev/pd_bdm0 PD BDM interface on lp0 1064 1 = /dev/pd_bdm1 PD BDM interface on lp1 1065 2 = /dev/pd_bdm2 PD BDM interface on lp2 1066 4 = /dev/icd_bdm0 ICD BDM interface on lp0 1067 5 = /dev/icd_bdm1 ICD BDM interface on lp1 1068 6 = /dev/icd_bdm2 ICD BDM interface on lp2 1069 1070 This device is used for the interfacing to the MC683xx 1071 microcontrollers via Background Debug Mode by use of a 1072 Parallel Port interface. PD is the Motorola Public 1073 Domain Interface and ICD is the commercial interface 1074 by P&E. 1075 1076 53 block Mylex DAC960 PCI RAID controller; sixth controller 1077 0 = /dev/rd/c5d0 First disk, whole disk 1078 8 = /dev/rd/c5d1 Second disk, whole disk 1079 ... 1080 248 = /dev/rd/c5d31 32nd disk, whole disk 1081 1082 Partitions are handled as for major 48. 1083 1084 54 char Electrocardiognosis Holter serial card 1085 0 = /dev/holter0 First Holter port 1086 1 = /dev/holter1 Second Holter port 1087 2 = /dev/holter2 Third Holter port 1088 1089 A custom serial card used by Electrocardiognosis SRL 1090 <mseritan@ottonel.pub.ro> to transfer data from Holter 1091 24-hour heart monitoring equipment. 1092 1093 54 block Mylex DAC960 PCI RAID controller; seventh controller 1094 0 = /dev/rd/c6d0 First disk, whole disk 1095 8 = /dev/rd/c6d1 Second disk, whole disk 1096 ... 1097 248 = /dev/rd/c6d31 32nd disk, whole disk 1098 1099 Partitions are handled as for major 48. 1100 1101 55 char DSP56001 digital signal processor 1102 0 = /dev/dsp56k First DSP56001 1103 1104 55 block Mylex DAC960 PCI RAID controller; eighth controller 1105 0 = /dev/rd/c7d0 First disk, whole disk 1106 8 = /dev/rd/c7d1 Second disk, whole disk 1107 ... 1108 248 = /dev/rd/c7d31 32nd disk, whole disk 1109 1110 Partitions are handled as for major 48. 1111 1112 56 char Apple Desktop Bus 1113 0 = /dev/adb ADB bus control 1114 1115 Additional devices will be added to this number, all 1116 starting with /dev/adb. 1117 1118 56 block Fifth IDE hard disk/CD-ROM interface 1119 0 = /dev/hdi Master: whole disk (or CD-ROM) 1120 64 = /dev/hdj Slave: whole disk (or CD-ROM) 1121 1122 Partitions are handled the same way as for the first 1123 interface (see major number 3). 1124 1125 57 char Hayes ESP serial card 1126 0 = /dev/ttyP0 First ESP port 1127 1 = /dev/ttyP1 Second ESP port 1128 ... 1129 1130 57 block Sixth IDE hard disk/CD-ROM interface 1131 0 = /dev/hdk Master: whole disk (or CD-ROM) 1132 64 = /dev/hdl Slave: whole disk (or CD-ROM) 1133 1134 Partitions are handled the same way as for the first 1135 interface (see major number 3). 1136 1137 58 char Hayes ESP serial card - alternate devices 1138 0 = /dev/cup0 Callout device for ttyP0 1139 1 = /dev/cup1 Callout device for ttyP1 1140 ... 1141 1142 58 block Reserved for logical volume manager 1143 1144 59 char sf firewall package 1145 0 = /dev/firewall Communication with sf kernel module 1146 1147 59 block Generic PDA filesystem device 1148 0 = /dev/pda0 First PDA device 1149 1 = /dev/pda1 Second PDA device 1150 ... 1151 1152 The pda devices are used to mount filesystems on 1153 remote pda's (basically slow handheld machines with 1154 proprietary OS's and limited memory and storage 1155 running small fs translation drivers) through serial / 1156 IRDA / parallel links. 1157 1158 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc 1159 1160 60-63 char LOCAL/EXPERIMENTAL USE 1161 1162 60-63 block LOCAL/EXPERIMENTAL USE 1163 Allocated for local/experimental use. For devices not 1164 assigned official numbers, these ranges should be 1165 used in order to avoid conflicting with future assignments. 1166 1167 64 char ENskip kernel encryption package 1168 0 = /dev/enskip Communication with ENskip kernel module 1169 1170 64 block Scramdisk/DriveCrypt encrypted devices 1171 0 = /dev/scramdisk/master Master node for ioctls 1172 1 = /dev/scramdisk/1 First encrypted device 1173 2 = /dev/scramdisk/2 Second encrypted device 1174 ... 1175 255 = /dev/scramdisk/255 255th encrypted device 1176 1177 The filename of the encrypted container and the passwords 1178 are sent via ioctls (using the sdmount tool) to the master 1179 node which then activates them via one of the 1180 /dev/scramdisk/x nodes for loop mounting (all handled 1181 through the sdmount tool). 1182 1183 Requested by: andy@scramdisklinux.org 1184 1185 65 char Sundance "plink" Transputer boards (obsolete, unused) 1186 0 = /dev/plink0 First plink device 1187 1 = /dev/plink1 Second plink device 1188 2 = /dev/plink2 Third plink device 1189 3 = /dev/plink3 Fourth plink device 1190 64 = /dev/rplink0 First plink device, raw 1191 65 = /dev/rplink1 Second plink device, raw 1192 66 = /dev/rplink2 Third plink device, raw 1193 67 = /dev/rplink3 Fourth plink device, raw 1194 128 = /dev/plink0d First plink device, debug 1195 129 = /dev/plink1d Second plink device, debug 1196 130 = /dev/plink2d Third plink device, debug 1197 131 = /dev/plink3d Fourth plink device, debug 1198 192 = /dev/rplink0d First plink device, raw, debug 1199 193 = /dev/rplink1d Second plink device, raw, debug 1200 194 = /dev/rplink2d Third plink device, raw, debug 1201 195 = /dev/rplink3d Fourth plink device, raw, debug 1202 1203 This is a commercial driver; contact James Howes 1204 <jth@prosig.demon.co.uk> for information. 1205 1206 65 block SCSI disk devices (16-31) 1207 0 = /dev/sdq 17th SCSI disk whole disk 1208 16 = /dev/sdr 18th SCSI disk whole disk 1209 32 = /dev/sds 19th SCSI disk whole disk 1210 ... 1211 240 = /dev/sdaf 32nd SCSI disk whole disk 1212 1213 Partitions are handled in the same way as for IDE 1214 disks (see major number 3) except that the limit on 1215 partitions is 15. 1216 1217 66 char YARC PowerPC PCI coprocessor card 1218 0 = /dev/yppcpci0 First YARC card 1219 1 = /dev/yppcpci1 Second YARC card 1220 ... 1221 1222 66 block SCSI disk devices (32-47) 1223 0 = /dev/sdag 33th SCSI disk whole disk 1224 16 = /dev/sdah 34th SCSI disk whole disk 1225 32 = /dev/sdai 35th SCSI disk whole disk 1226 ... 1227 240 = /dev/sdav 48nd SCSI disk whole disk 1228 1229 Partitions are handled in the same way as for IDE 1230 disks (see major number 3) except that the limit on 1231 partitions is 15. 1232 1233 67 char Coda network file system 1234 0 = /dev/cfs0 Coda cache manager 1235 1236 See http://www.coda.cs.cmu.edu for information about Coda. 1237 1238 67 block SCSI disk devices (48-63) 1239 0 = /dev/sdaw 49th SCSI disk whole disk 1240 16 = /dev/sdax 50th SCSI disk whole disk 1241 32 = /dev/sday 51st SCSI disk whole disk 1242 ... 1243 240 = /dev/sdbl 64th SCSI disk whole disk 1244 1245 Partitions are handled in the same way as for IDE 1246 disks (see major number 3) except that the limit on 1247 partitions is 15. 1248 1249 68 char CAPI 2.0 interface 1250 0 = /dev/capi20 Control device 1251 1 = /dev/capi20.00 First CAPI 2.0 application 1252 2 = /dev/capi20.01 Second CAPI 2.0 application 1253 ... 1254 20 = /dev/capi20.19 19th CAPI 2.0 application 1255 1256 ISDN CAPI 2.0 driver for use with CAPI 2.0 1257 applications; currently supports the AVM B1 card. 1258 1259 68 block SCSI disk devices (64-79) 1260 0 = /dev/sdbm 65th SCSI disk whole disk 1261 16 = /dev/sdbn 66th SCSI disk whole disk 1262 32 = /dev/sdbo 67th SCSI disk whole disk 1263 ... 1264 240 = /dev/sdcb 80th SCSI disk whole disk 1265 1266 Partitions are handled in the same way as for IDE 1267 disks (see major number 3) except that the limit on 1268 partitions is 15. 1269 1270 69 char MA16 numeric accelerator card 1271 0 = /dev/ma16 Board memory access 1272 1273 69 block SCSI disk devices (80-95) 1274 0 = /dev/sdcc 81st SCSI disk whole disk 1275 16 = /dev/sdcd 82nd SCSI disk whole disk 1276 32 = /dev/sdce 83th SCSI disk whole disk 1277 ... 1278 240 = /dev/sdcr 96th SCSI disk whole disk 1279 1280 Partitions are handled in the same way as for IDE 1281 disks (see major number 3) except that the limit on 1282 partitions is 15. 1283 1284 70 char SpellCaster Protocol Services Interface 1285 0 = /dev/apscfg Configuration interface 1286 1 = /dev/apsauth Authentication interface 1287 2 = /dev/apslog Logging interface 1288 3 = /dev/apsdbg Debugging interface 1289 64 = /dev/apsisdn ISDN command interface 1290 65 = /dev/apsasync Async command interface 1291 128 = /dev/apsmon Monitor interface 1292 1293 70 block SCSI disk devices (96-111) 1294 0 = /dev/sdcs 97th SCSI disk whole disk 1295 16 = /dev/sdct 98th SCSI disk whole disk 1296 32 = /dev/sdcu 99th SCSI disk whole disk 1297 ... 1298 240 = /dev/sddh 112nd SCSI disk whole disk 1299 1300 Partitions are handled in the same way as for IDE 1301 disks (see major number 3) except that the limit on 1302 partitions is 15. 1303 1304 71 char Computone IntelliPort II serial card 1305 0 = /dev/ttyF0 IntelliPort II board 0, port 0 1306 1 = /dev/ttyF1 IntelliPort II board 0, port 1 1307 ... 1308 63 = /dev/ttyF63 IntelliPort II board 0, port 63 1309 64 = /dev/ttyF64 IntelliPort II board 1, port 0 1310 65 = /dev/ttyF65 IntelliPort II board 1, port 1 1311 ... 1312 127 = /dev/ttyF127 IntelliPort II board 1, port 63 1313 128 = /dev/ttyF128 IntelliPort II board 2, port 0 1314 129 = /dev/ttyF129 IntelliPort II board 2, port 1 1315 ... 1316 191 = /dev/ttyF191 IntelliPort II board 2, port 63 1317 192 = /dev/ttyF192 IntelliPort II board 3, port 0 1318 193 = /dev/ttyF193 IntelliPort II board 3, port 1 1319 ... 1320 255 = /dev/ttyF255 IntelliPort II board 3, port 63 1321 1322 71 block SCSI disk devices (112-127) 1323 0 = /dev/sddi 113th SCSI disk whole disk 1324 16 = /dev/sddj 114th SCSI disk whole disk 1325 32 = /dev/sddk 115th SCSI disk whole disk 1326 ... 1327 240 = /dev/sddx 128th SCSI disk whole disk 1328 1329 Partitions are handled in the same way as for IDE 1330 disks (see major number 3) except that the limit on 1331 partitions is 15. 1332 1333 72 char Computone IntelliPort II serial card - alternate devices 1334 0 = /dev/cuf0 Callout device for ttyF0 1335 1 = /dev/cuf1 Callout device for ttyF1 1336 ... 1337 63 = /dev/cuf63 Callout device for ttyF63 1338 64 = /dev/cuf64 Callout device for ttyF64 1339 65 = /dev/cuf65 Callout device for ttyF65 1340 ... 1341 127 = /dev/cuf127 Callout device for ttyF127 1342 128 = /dev/cuf128 Callout device for ttyF128 1343 129 = /dev/cuf129 Callout device for ttyF129 1344 ... 1345 191 = /dev/cuf191 Callout device for ttyF191 1346 192 = /dev/cuf192 Callout device for ttyF192 1347 193 = /dev/cuf193 Callout device for ttyF193 1348 ... 1349 255 = /dev/cuf255 Callout device for ttyF255 1350 1351 72 block Compaq Intelligent Drive Array, first controller 1352 0 = /dev/ida/c0d0 First logical drive whole disk 1353 16 = /dev/ida/c0d1 Second logical drive whole disk 1354 ... 1355 240 = /dev/ida/c0d15 16th logical drive whole disk 1356 1357 Partitions are handled the same way as for Mylex 1358 DAC960 (see major number 48) except that the limit on 1359 partitions is 15. 1360 1361 73 char Computone IntelliPort II serial card - control devices 1362 0 = /dev/ip2ipl0 Loadware device for board 0 1363 1 = /dev/ip2stat0 Status device for board 0 1364 4 = /dev/ip2ipl1 Loadware device for board 1 1365 5 = /dev/ip2stat1 Status device for board 1 1366 8 = /dev/ip2ipl2 Loadware device for board 2 1367 9 = /dev/ip2stat2 Status device for board 2 1368 12 = /dev/ip2ipl3 Loadware device for board 3 1369 13 = /dev/ip2stat3 Status device for board 3 1370 1371 73 block Compaq Intelligent Drive Array, second controller 1372 0 = /dev/ida/c1d0 First logical drive whole disk 1373 16 = /dev/ida/c1d1 Second logical drive whole disk 1374 ... 1375 240 = /dev/ida/c1d15 16th logical drive whole disk 1376 1377 Partitions are handled the same way as for Mylex 1378 DAC960 (see major number 48) except that the limit on 1379 partitions is 15. 1380 1381 74 char SCI bridge 1382 0 = /dev/SCI/0 SCI device 0 1383 1 = /dev/SCI/1 SCI device 1 1384 ... 1385 1386 Currently for Dolphin Interconnect Solutions' PCI-SCI 1387 bridge. 1388 1389 74 block Compaq Intelligent Drive Array, third controller 1390 0 = /dev/ida/c2d0 First logical drive whole disk 1391 16 = /dev/ida/c2d1 Second logical drive whole disk 1392 ... 1393 240 = /dev/ida/c2d15 16th logical drive whole disk 1394 1395 Partitions are handled the same way as for Mylex 1396 DAC960 (see major number 48) except that the limit on 1397 partitions is 15. 1398 1399 75 char Specialix IO8+ serial card 1400 0 = /dev/ttyW0 First IO8+ port, first card 1401 1 = /dev/ttyW1 Second IO8+ port, first card 1402 ... 1403 8 = /dev/ttyW8 First IO8+ port, second card 1404 ... 1405 1406 75 block Compaq Intelligent Drive Array, fourth controller 1407 0 = /dev/ida/c3d0 First logical drive whole disk 1408 16 = /dev/ida/c3d1 Second logical drive whole disk 1409 ... 1410 240 = /dev/ida/c3d15 16th logical drive whole disk 1411 1412 Partitions are handled the same way as for Mylex 1413 DAC960 (see major number 48) except that the limit on 1414 partitions is 15. 1415 1416 76 char Specialix IO8+ serial card - alternate devices 1417 0 = /dev/cuw0 Callout device for ttyW0 1418 1 = /dev/cuw1 Callout device for ttyW1 1419 ... 1420 8 = /dev/cuw8 Callout device for ttyW8 1421 ... 1422 1423 76 block Compaq Intelligent Drive Array, fifth controller 1424 0 = /dev/ida/c4d0 First logical drive whole disk 1425 16 = /dev/ida/c4d1 Second logical drive whole disk 1426 ... 1427 240 = /dev/ida/c4d15 16th logical drive whole disk 1428 1429 Partitions are handled the same way as for Mylex 1430 DAC960 (see major number 48) except that the limit on 1431 partitions is 15. 1432 1433 1434 77 char ComScire Quantum Noise Generator 1435 0 = /dev/qng ComScire Quantum Noise Generator 1436 1437 77 block Compaq Intelligent Drive Array, sixth controller 1438 0 = /dev/ida/c5d0 First logical drive whole disk 1439 16 = /dev/ida/c5d1 Second logical drive whole disk 1440 ... 1441 240 = /dev/ida/c5d15 16th logical drive whole disk 1442 1443 Partitions are handled the same way as for Mylex 1444 DAC960 (see major number 48) except that the limit on 1445 partitions is 15. 1446 1447 78 char PAM Software's multimodem boards 1448 0 = /dev/ttyM0 First PAM modem 1449 1 = /dev/ttyM1 Second PAM modem 1450 ... 1451 1452 78 block Compaq Intelligent Drive Array, seventh controller 1453 0 = /dev/ida/c6d0 First logical drive whole disk 1454 16 = /dev/ida/c6d1 Second logical drive whole disk 1455 ... 1456 240 = /dev/ida/c6d15 16th logical drive whole disk 1457 1458 Partitions are handled the same way as for Mylex 1459 DAC960 (see major number 48) except that the limit on 1460 partitions is 15. 1461 1462 79 char PAM Software's multimodem boards - alternate devices 1463 0 = /dev/cum0 Callout device for ttyM0 1464 1 = /dev/cum1 Callout device for ttyM1 1465 ... 1466 1467 79 block Compaq Intelligent Drive Array, eighth controller 1468 0 = /dev/ida/c7d0 First logical drive whole disk 1469 16 = /dev/ida/c7d1 Second logical drive whole disk 1470 ... 1471 240 = /dev/ida/c715 16th logical drive whole disk 1472 1473 Partitions are handled the same way as for Mylex 1474 DAC960 (see major number 48) except that the limit on 1475 partitions is 15. 1476 1477 80 char Photometrics AT200 CCD camera 1478 0 = /dev/at200 Photometrics AT200 CCD camera 1479 1480 80 block I2O hard disk 1481 0 = /dev/i2o/hda First I2O hard disk, whole disk 1482 16 = /dev/i2o/hdb Second I2O hard disk, whole disk 1483 ... 1484 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk 1485 1486 Partitions are handled in the same way as for IDE 1487 disks (see major number 3) except that the limit on 1488 partitions is 15. 1489 1490 81 char video4linux 1491 0 = /dev/video0 Video capture/overlay device 1492 ... 1493 63 = /dev/video63 Video capture/overlay device 1494 64 = /dev/radio0 Radio device 1495 ... 1496 127 = /dev/radio63 Radio device 1497 128 = /dev/swradio0 Software Defined Radio device 1498 ... 1499 191 = /dev/swradio63 Software Defined Radio device 1500 224 = /dev/vbi0 Vertical blank interrupt 1501 ... 1502 255 = /dev/vbi31 Vertical blank interrupt 1503 1504 Minor numbers are allocated dynamically unless 1505 CONFIG_VIDEO_FIXED_MINOR_RANGES (default n) 1506 configuration option is set. 1507 1508 81 block I2O hard disk 1509 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk 1510 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk 1511 ... 1512 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk 1513 1514 Partitions are handled in the same way as for IDE 1515 disks (see major number 3) except that the limit on 1516 partitions is 15. 1517 1518 82 char WiNRADiO communications receiver card 1519 0 = /dev/winradio0 First WiNRADiO card 1520 1 = /dev/winradio1 Second WiNRADiO card 1521 ... 1522 1523 The driver and documentation may be obtained from 1524 http://www.winradio.com/ 1525 1526 82 block I2O hard disk 1527 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk 1528 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk 1529 ... 1530 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk 1531 1532 Partitions are handled in the same way as for IDE 1533 disks (see major number 3) except that the limit on 1534 partitions is 15. 1535 1536 83 char Matrox mga_vid video driver 1537 0 = /dev/mga_vid0 1st video card 1538 1 = /dev/mga_vid1 2nd video card 1539 2 = /dev/mga_vid2 3rd video card 1540 ... 1541 15 = /dev/mga_vid15 16th video card 1542 1543 83 block I2O hard disk 1544 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk 1545 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk 1546 ... 1547 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk 1548 1549 Partitions are handled in the same way as for IDE 1550 disks (see major number 3) except that the limit on 1551 partitions is 15. 1552 1553 84 char Ikon 1011[57] Versatec Greensheet Interface 1554 0 = /dev/ihcp0 First Greensheet port 1555 1 = /dev/ihcp1 Second Greensheet port 1556 1557 84 block I2O hard disk 1558 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk 1559 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk 1560 ... 1561 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk 1562 1563 Partitions are handled in the same way as for IDE 1564 disks (see major number 3) except that the limit on 1565 partitions is 15. 1566 1567 85 char Linux/SGI shared memory input queue 1568 0 = /dev/shmiq Master shared input queue 1569 1 = /dev/qcntl0 First device pushed 1570 2 = /dev/qcntl1 Second device pushed 1571 ... 1572 1573 85 block I2O hard disk 1574 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk 1575 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk 1576 ... 1577 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk 1578 1579 Partitions are handled in the same way as for IDE 1580 disks (see major number 3) except that the limit on 1581 partitions is 15. 1582 1583 86 char SCSI media changer 1584 0 = /dev/sch0 First SCSI media changer 1585 1 = /dev/sch1 Second SCSI media changer 1586 ... 1587 1588 86 block I2O hard disk 1589 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk 1590 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk 1591 ... 1592 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk 1593 1594 Partitions are handled in the same way as for IDE 1595 disks (see major number 3) except that the limit on 1596 partitions is 15. 1597 1598 87 char Sony Control-A1 stereo control bus 1599 0 = /dev/controla0 First device on chain 1600 1 = /dev/controla1 Second device on chain 1601 ... 1602 1603 87 block I2O hard disk 1604 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk 1605 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk 1606 ... 1607 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk 1608 1609 Partitions are handled in the same way as for IDE 1610 disks (see major number 3) except that the limit on 1611 partitions is 15. 1612 1613 88 char COMX synchronous serial card 1614 0 = /dev/comx0 COMX channel 0 1615 1 = /dev/comx1 COMX channel 1 1616 ... 1617 1618 88 block Seventh IDE hard disk/CD-ROM interface 1619 0 = /dev/hdm Master: whole disk (or CD-ROM) 1620 64 = /dev/hdn Slave: whole disk (or CD-ROM) 1621 1622 Partitions are handled the same way as for the first 1623 interface (see major number 3). 1624 1625 89 char I2C bus interface 1626 0 = /dev/i2c-0 First I2C adapter 1627 1 = /dev/i2c-1 Second I2C adapter 1628 ... 1629 1630 89 block Eighth IDE hard disk/CD-ROM interface 1631 0 = /dev/hdo Master: whole disk (or CD-ROM) 1632 64 = /dev/hdp Slave: whole disk (or CD-ROM) 1633 1634 Partitions are handled the same way as for the first 1635 interface (see major number 3). 1636 1637 90 char Memory Technology Device (RAM, ROM, Flash) 1638 0 = /dev/mtd0 First MTD (rw) 1639 1 = /dev/mtdr0 First MTD (ro) 1640 ... 1641 30 = /dev/mtd15 16th MTD (rw) 1642 31 = /dev/mtdr15 16th MTD (ro) 1643 1644 90 block Ninth IDE hard disk/CD-ROM interface 1645 0 = /dev/hdq Master: whole disk (or CD-ROM) 1646 64 = /dev/hdr Slave: whole disk (or CD-ROM) 1647 1648 Partitions are handled the same way as for the first 1649 interface (see major number 3). 1650 1651 91 char CAN-Bus devices 1652 0 = /dev/can0 First CAN-Bus controller 1653 1 = /dev/can1 Second CAN-Bus controller 1654 ... 1655 1656 91 block Tenth IDE hard disk/CD-ROM interface 1657 0 = /dev/hds Master: whole disk (or CD-ROM) 1658 64 = /dev/hdt Slave: whole disk (or CD-ROM) 1659 1660 Partitions are handled the same way as for the first 1661 interface (see major number 3). 1662 1663 92 char Reserved for ith Kommunikationstechnik MIC ISDN card 1664 1665 92 block PPDD encrypted disk driver 1666 0 = /dev/ppdd0 First encrypted disk 1667 1 = /dev/ppdd1 Second encrypted disk 1668 ... 1669 1670 Partitions are handled in the same way as for IDE 1671 disks (see major number 3) except that the limit on 1672 partitions is 15. 1673 1674 93 char 1675 1676 93 block NAND Flash Translation Layer filesystem 1677 0 = /dev/nftla First NFTL layer 1678 16 = /dev/nftlb Second NFTL layer 1679 ... 1680 240 = /dev/nftlp 16th NTFL layer 1681 1682 94 char 1683 1684 94 block IBM S/390 DASD block storage 1685 0 = /dev/dasda First DASD device, major 1686 1 = /dev/dasda1 First DASD device, block 1 1687 2 = /dev/dasda2 First DASD device, block 2 1688 3 = /dev/dasda3 First DASD device, block 3 1689 4 = /dev/dasdb Second DASD device, major 1690 5 = /dev/dasdb1 Second DASD device, block 1 1691 6 = /dev/dasdb2 Second DASD device, block 2 1692 7 = /dev/dasdb3 Second DASD device, block 3 1693 ... 1694 1695 95 char IP filter 1696 0 = /dev/ipl Filter control device/log file 1697 1 = /dev/ipnat NAT control device/log file 1698 2 = /dev/ipstate State information log file 1699 3 = /dev/ipauth Authentication control device/log file 1700 ... 1701 1702 96 char Parallel port ATAPI tape devices 1703 0 = /dev/pt0 First parallel port ATAPI tape 1704 1 = /dev/pt1 Second parallel port ATAPI tape 1705 ... 1706 128 = /dev/npt0 First p.p. ATAPI tape, no rewind 1707 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind 1708 ... 1709 1710 96 block Inverse NAND Flash Translation Layer 1711 0 = /dev/inftla First INFTL layer 1712 16 = /dev/inftlb Second INFTL layer 1713 ... 1714 240 = /dev/inftlp 16th INTFL layer 1715 1716 97 char Parallel port generic ATAPI interface 1717 0 = /dev/pg0 First parallel port ATAPI device 1718 1 = /dev/pg1 Second parallel port ATAPI device 1719 2 = /dev/pg2 Third parallel port ATAPI device 1720 3 = /dev/pg3 Fourth parallel port ATAPI device 1721 1722 These devices support the same API as the generic SCSI 1723 devices. 1724 1725 98 char Control and Measurement Device (comedi) 1726 0 = /dev/comedi0 First comedi device 1727 1 = /dev/comedi1 Second comedi device 1728 ... 1729 1730 See http://stm.lbl.gov/comedi. 1731 1732 98 block User-mode virtual block device 1733 0 = /dev/ubda First user-mode block device 1734 16 = /dev/udbb Second user-mode block device 1735 ... 1736 1737 Partitions are handled in the same way as for IDE 1738 disks (see major number 3) except that the limit on 1739 partitions is 15. 1740 1741 This device is used by the user-mode virtual kernel port. 1742 1743 99 char Raw parallel ports 1744 0 = /dev/parport0 First parallel port 1745 1 = /dev/parport1 Second parallel port 1746 ... 1747 1748 99 block JavaStation flash disk 1749 0 = /dev/jsfd JavaStation flash disk 1750 1751100 char Telephony for Linux 1752 0 = /dev/phone0 First telephony device 1753 1 = /dev/phone1 Second telephony device 1754 ... 1755 1756101 char Motorola DSP 56xxx board 1757 0 = /dev/mdspstat Status information 1758 1 = /dev/mdsp1 First DSP board I/O controls 1759 ... 1760 16 = /dev/mdsp16 16th DSP board I/O controls 1761 1762101 block AMI HyperDisk RAID controller 1763 0 = /dev/amiraid/ar0 First array whole disk 1764 16 = /dev/amiraid/ar1 Second array whole disk 1765 ... 1766 240 = /dev/amiraid/ar15 16th array whole disk 1767 1768 For each device, partitions are added as: 1769 0 = /dev/amiraid/ar? Whole disk 1770 1 = /dev/amiraid/ar?p1 First partition 1771 2 = /dev/amiraid/ar?p2 Second partition 1772 ... 1773 15 = /dev/amiraid/ar?p15 15th partition 1774 1775102 char 1776 1777102 block Compressed block device 1778 0 = /dev/cbd/a First compressed block device, whole device 1779 16 = /dev/cbd/b Second compressed block device, whole device 1780 ... 1781 240 = /dev/cbd/p 16th compressed block device, whole device 1782 1783 Partitions are handled in the same way as for IDE 1784 disks (see major number 3) except that the limit on 1785 partitions is 15. 1786 1787103 char Arla network file system 1788 0 = /dev/nnpfs0 First NNPFS device 1789 1 = /dev/nnpfs1 Second NNPFS device 1790 1791 Arla is a free clone of the Andrew File System, AFS. 1792 The NNPFS device gives user mode filesystem 1793 implementations a kernel presence for caching and easy 1794 mounting. For more information about the project, 1795 write to <arla-drinkers@stacken.kth.se> or see 1796 http://www.stacken.kth.se/project/arla/ 1797 1798103 block Audit device 1799 0 = /dev/audit Audit device 1800 1801104 char Flash BIOS support 1802 1803104 block Compaq Next Generation Drive Array, first controller 1804 0 = /dev/cciss/c0d0 First logical drive, whole disk 1805 16 = /dev/cciss/c0d1 Second logical drive, whole disk 1806 ... 1807 240 = /dev/cciss/c0d15 16th logical drive, whole disk 1808 1809 Partitions are handled the same way as for Mylex 1810 DAC960 (see major number 48) except that the limit on 1811 partitions is 15. 1812 1813105 char Comtrol VS-1000 serial controller 1814 0 = /dev/ttyV0 First VS-1000 port 1815 1 = /dev/ttyV1 Second VS-1000 port 1816 ... 1817 1818105 block Compaq Next Generation Drive Array, second controller 1819 0 = /dev/cciss/c1d0 First logical drive, whole disk 1820 16 = /dev/cciss/c1d1 Second logical drive, whole disk 1821 ... 1822 240 = /dev/cciss/c1d15 16th logical drive, whole disk 1823 1824 Partitions are handled the same way as for Mylex 1825 DAC960 (see major number 48) except that the limit on 1826 partitions is 15. 1827 1828106 char Comtrol VS-1000 serial controller - alternate devices 1829 0 = /dev/cuv0 First VS-1000 port 1830 1 = /dev/cuv1 Second VS-1000 port 1831 ... 1832 1833106 block Compaq Next Generation Drive Array, third controller 1834 0 = /dev/cciss/c2d0 First logical drive, whole disk 1835 16 = /dev/cciss/c2d1 Second logical drive, whole disk 1836 ... 1837 240 = /dev/cciss/c2d15 16th logical drive, whole disk 1838 1839 Partitions are handled the same way as for Mylex 1840 DAC960 (see major number 48) except that the limit on 1841 partitions is 15. 1842 1843107 char 3Dfx Voodoo Graphics device 1844 0 = /dev/3dfx Primary 3Dfx graphics device 1845 1846107 block Compaq Next Generation Drive Array, fourth controller 1847 0 = /dev/cciss/c3d0 First logical drive, whole disk 1848 16 = /dev/cciss/c3d1 Second logical drive, whole disk 1849 ... 1850 240 = /dev/cciss/c3d15 16th logical drive, whole disk 1851 1852 Partitions are handled the same way as for Mylex 1853 DAC960 (see major number 48) except that the limit on 1854 partitions is 15. 1855 1856108 char Device independent PPP interface 1857 0 = /dev/ppp Device independent PPP interface 1858 1859108 block Compaq Next Generation Drive Array, fifth controller 1860 0 = /dev/cciss/c4d0 First logical drive, whole disk 1861 16 = /dev/cciss/c4d1 Second logical drive, whole disk 1862 ... 1863 240 = /dev/cciss/c4d15 16th logical drive, whole disk 1864 1865 Partitions are handled the same way as for Mylex 1866 DAC960 (see major number 48) except that the limit on 1867 partitions is 15. 1868 1869109 char Reserved for logical volume manager 1870 1871109 block Compaq Next Generation Drive Array, sixth controller 1872 0 = /dev/cciss/c5d0 First logical drive, whole disk 1873 16 = /dev/cciss/c5d1 Second logical drive, whole disk 1874 ... 1875 240 = /dev/cciss/c5d15 16th logical drive, whole disk 1876 1877 Partitions are handled the same way as for Mylex 1878 DAC960 (see major number 48) except that the limit on 1879 partitions is 15. 1880 1881110 char miroMEDIA Surround board 1882 0 = /dev/srnd0 First miroMEDIA Surround board 1883 1 = /dev/srnd1 Second miroMEDIA Surround board 1884 ... 1885 1886110 block Compaq Next Generation Drive Array, seventh controller 1887 0 = /dev/cciss/c6d0 First logical drive, whole disk 1888 16 = /dev/cciss/c6d1 Second logical drive, whole disk 1889 ... 1890 240 = /dev/cciss/c6d15 16th logical drive, whole disk 1891 1892 Partitions are handled the same way as for Mylex 1893 DAC960 (see major number 48) except that the limit on 1894 partitions is 15. 1895 1896111 char 1897 1898111 block Compaq Next Generation Drive Array, eighth controller 1899 0 = /dev/cciss/c7d0 First logical drive, whole disk 1900 16 = /dev/cciss/c7d1 Second logical drive, whole disk 1901 ... 1902 240 = /dev/cciss/c7d15 16th logical drive, whole disk 1903 1904 Partitions are handled the same way as for Mylex 1905 DAC960 (see major number 48) except that the limit on 1906 partitions is 15. 1907 1908112 char ISI serial card 1909 0 = /dev/ttyM0 First ISI port 1910 1 = /dev/ttyM1 Second ISI port 1911 ... 1912 1913 There is currently a device-naming conflict between 1914 these and PAM multimodems (major 78). 1915 1916112 block IBM iSeries virtual disk 1917 0 = /dev/iseries/vda First virtual disk, whole disk 1918 8 = /dev/iseries/vdb Second virtual disk, whole disk 1919 ... 1920 200 = /dev/iseries/vdz 26th virtual disk, whole disk 1921 208 = /dev/iseries/vdaa 27th virtual disk, whole disk 1922 ... 1923 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk 1924 1925 Partitions are handled in the same way as for IDE 1926 disks (see major number 3) except that the limit on 1927 partitions is 7. 1928 1929113 char ISI serial card - alternate devices 1930 0 = /dev/cum0 Callout device for ttyM0 1931 1 = /dev/cum1 Callout device for ttyM1 1932 ... 1933 1934113 block IBM iSeries virtual CD-ROM 1935 0 = /dev/iseries/vcda First virtual CD-ROM 1936 1 = /dev/iseries/vcdb Second virtual CD-ROM 1937 ... 1938 1939114 char Picture Elements ISE board 1940 0 = /dev/ise0 First ISE board 1941 1 = /dev/ise1 Second ISE board 1942 ... 1943 128 = /dev/isex0 Control node for first ISE board 1944 129 = /dev/isex1 Control node for second ISE board 1945 ... 1946 1947 The ISE board is an embedded computer, optimized for 1948 image processing. The /dev/iseN nodes are the general 1949 I/O access to the board, the /dev/isex0 nodes command 1950 nodes used to control the board. 1951 1952114 block IDE BIOS powered software RAID interfaces such as the 1953 Promise Fastrak 1954 1955 0 = /dev/ataraid/d0 1956 1 = /dev/ataraid/d0p1 1957 2 = /dev/ataraid/d0p2 1958 ... 1959 16 = /dev/ataraid/d1 1960 17 = /dev/ataraid/d1p1 1961 18 = /dev/ataraid/d1p2 1962 ... 1963 255 = /dev/ataraid/d15p15 1964 1965 Partitions are handled in the same way as for IDE 1966 disks (see major number 3) except that the limit on 1967 partitions is 15. 1968 1969115 char TI link cable devices (115 was formerly the console driver speaker) 1970 0 = /dev/tipar0 Parallel cable on first parallel port 1971 ... 1972 7 = /dev/tipar7 Parallel cable on seventh parallel port 1973 1974 8 = /dev/tiser0 Serial cable on first serial port 1975 ... 1976 15 = /dev/tiser7 Serial cable on seventh serial port 1977 1978 16 = /dev/tiusb0 First USB cable 1979 ... 1980 47 = /dev/tiusb31 32nd USB cable 1981 1982115 block NetWare (NWFS) Devices (0-255) 1983 1984 The NWFS (NetWare) devices are used to present a 1985 collection of NetWare Mirror Groups or NetWare 1986 Partitions as a logical storage segment for 1987 use in mounting NetWare volumes. A maximum of 1988 256 NetWare volumes can be supported in a single 1989 machine. 1990 1991 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/ 1992 1993 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume 1994 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume 1995 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume 1996 ... 1997 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume 1998 1999116 char Advanced Linux Sound Driver (ALSA) 2000 2001116 block MicroMemory battery backed RAM adapter (NVRAM) 2002 Supports 16 boards, 15 partitions each. 2003 Requested by neilb at cse.unsw.edu.au. 2004 2005 0 = /dev/umem/d0 Whole of first board 2006 1 = /dev/umem/d0p1 First partition of first board 2007 2 = /dev/umem/d0p2 Second partition of first board 2008 15 = /dev/umem/d0p15 15th partition of first board 2009 2010 16 = /dev/umem/d1 Whole of second board 2011 17 = /dev/umem/d1p1 First partition of second board 2012 ... 2013 255= /dev/umem/d15p15 15th partition of 16th board. 2014 2015117 char COSA/SRP synchronous serial card 2016 0 = /dev/cosa0c0 1st board, 1st channel 2017 1 = /dev/cosa0c1 1st board, 2nd channel 2018 ... 2019 16 = /dev/cosa1c0 2nd board, 1st channel 2020 17 = /dev/cosa1c1 2nd board, 2nd channel 2021 ... 2022 2023117 block Enterprise Volume Management System (EVMS) 2024 2025 The EVMS driver uses a layered, plug-in model to provide 2026 unparalleled flexibility and extensibility in managing 2027 storage. This allows for easy expansion or customization 2028 of various levels of volume management. Requested by 2029 Mark Peloquin (peloquin at us.ibm.com). 2030 2031 Note: EVMS populates and manages all the devnodes in 2032 /dev/evms. 2033 2034 http://sf.net/projects/evms 2035 2036 0 = /dev/evms/block_device EVMS block device 2037 1 = /dev/evms/legacyname1 First EVMS legacy device 2038 2 = /dev/evms/legacyname2 Second EVMS legacy device 2039 ... 2040 Both ranges can grow (down or up) until they meet. 2041 ... 2042 254 = /dev/evms/EVMSname2 Second EVMS native device 2043 255 = /dev/evms/EVMSname1 First EVMS native device 2044 2045 Note: legacyname(s) are derived from the normal legacy 2046 device names. For example, /dev/hda5 would become 2047 /dev/evms/hda5. 2048 2049118 char IBM Cryptographic Accelerator 2050 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators 2051 1 = /dev/ica0 IBMCA Device 0 2052 2 = /dev/ica1 IBMCA Device 1 2053 ... 2054 2055119 char VMware virtual network control 2056 0 = /dev/vnet0 1st virtual network 2057 1 = /dev/vnet1 2nd virtual network 2058 ... 2059 2060120-127 char LOCAL/EXPERIMENTAL USE 2061 2062120-127 block LOCAL/EXPERIMENTAL USE 2063 Allocated for local/experimental use. For devices not 2064 assigned official numbers, these ranges should be 2065 used in order to avoid conflicting with future assignments. 2066 2067128-135 char Unix98 PTY masters 2068 2069 These devices should not have corresponding device 2070 nodes; instead they should be accessed through the 2071 /dev/ptmx cloning interface. 2072 2073128 block SCSI disk devices (128-143) 2074 0 = /dev/sddy 129th SCSI disk whole disk 2075 16 = /dev/sddz 130th SCSI disk whole disk 2076 32 = /dev/sdea 131th SCSI disk whole disk 2077 ... 2078 240 = /dev/sden 144th SCSI disk whole disk 2079 2080 Partitions are handled in the same way as for IDE 2081 disks (see major number 3) except that the limit on 2082 partitions is 15. 2083 2084129 block SCSI disk devices (144-159) 2085 0 = /dev/sdeo 145th SCSI disk whole disk 2086 16 = /dev/sdep 146th SCSI disk whole disk 2087 32 = /dev/sdeq 147th SCSI disk whole disk 2088 ... 2089 240 = /dev/sdfd 160th SCSI disk whole disk 2090 2091 Partitions are handled in the same way as for IDE 2092 disks (see major number 3) except that the limit on 2093 partitions is 15. 2094 2095130 char (Misc devices) 2096 2097130 block SCSI disk devices (160-175) 2098 0 = /dev/sdfe 161st SCSI disk whole disk 2099 16 = /dev/sdff 162nd SCSI disk whole disk 2100 32 = /dev/sdfg 163rd SCSI disk whole disk 2101 ... 2102 240 = /dev/sdft 176th SCSI disk whole disk 2103 2104 Partitions are handled in the same way as for IDE 2105 disks (see major number 3) except that the limit on 2106 partitions is 15. 2107 2108131 block SCSI disk devices (176-191) 2109 0 = /dev/sdfu 177th SCSI disk whole disk 2110 16 = /dev/sdfv 178th SCSI disk whole disk 2111 32 = /dev/sdfw 179th SCSI disk whole disk 2112 ... 2113 240 = /dev/sdgj 192nd SCSI disk whole disk 2114 2115 Partitions are handled in the same way as for IDE 2116 disks (see major number 3) except that the limit on 2117 partitions is 15. 2118 2119132 block SCSI disk devices (192-207) 2120 0 = /dev/sdgk 193rd SCSI disk whole disk 2121 16 = /dev/sdgl 194th SCSI disk whole disk 2122 32 = /dev/sdgm 195th SCSI disk whole disk 2123 ... 2124 240 = /dev/sdgz 208th SCSI disk whole disk 2125 2126 Partitions are handled in the same way as for IDE 2127 disks (see major number 3) except that the limit on 2128 partitions is 15. 2129 2130133 block SCSI disk devices (208-223) 2131 0 = /dev/sdha 209th SCSI disk whole disk 2132 16 = /dev/sdhb 210th SCSI disk whole disk 2133 32 = /dev/sdhc 211th SCSI disk whole disk 2134 ... 2135 240 = /dev/sdhp 224th SCSI disk whole disk 2136 2137 Partitions are handled in the same way as for IDE 2138 disks (see major number 3) except that the limit on 2139 partitions is 15. 2140 2141134 block SCSI disk devices (224-239) 2142 0 = /dev/sdhq 225th SCSI disk whole disk 2143 16 = /dev/sdhr 226th SCSI disk whole disk 2144 32 = /dev/sdhs 227th SCSI disk whole disk 2145 ... 2146 240 = /dev/sdif 240th SCSI disk whole disk 2147 2148 Partitions are handled in the same way as for IDE 2149 disks (see major number 3) except that the limit on 2150 partitions is 15. 2151 2152135 block SCSI disk devices (240-255) 2153 0 = /dev/sdig 241st SCSI disk whole disk 2154 16 = /dev/sdih 242nd SCSI disk whole disk 2155 32 = /dev/sdih 243rd SCSI disk whole disk 2156 ... 2157 240 = /dev/sdiv 256th SCSI disk whole disk 2158 2159 Partitions are handled in the same way as for IDE 2160 disks (see major number 3) except that the limit on 2161 partitions is 15. 2162 2163136-143 char Unix98 PTY slaves 2164 0 = /dev/pts/0 First Unix98 pseudo-TTY 2165 1 = /dev/pts/1 Second Unix98 pseudo-TTY 2166 ... 2167 2168 These device nodes are automatically generated with 2169 the proper permissions and modes by mounting the 2170 devpts filesystem onto /dev/pts with the appropriate 2171 mount options (distribution dependent, however, on 2172 *most* distributions the appropriate options are 2173 "mode=0620,gid=<gid of the "tty" group>".) 2174 2175136 block Mylex DAC960 PCI RAID controller; ninth controller 2176 0 = /dev/rd/c8d0 First disk, whole disk 2177 8 = /dev/rd/c8d1 Second disk, whole disk 2178 ... 2179 248 = /dev/rd/c8d31 32nd disk, whole disk 2180 2181 Partitions are handled as for major 48. 2182 2183137 block Mylex DAC960 PCI RAID controller; tenth controller 2184 0 = /dev/rd/c9d0 First disk, whole disk 2185 8 = /dev/rd/c9d1 Second disk, whole disk 2186 ... 2187 248 = /dev/rd/c9d31 32nd disk, whole disk 2188 2189 Partitions are handled as for major 48. 2190 2191138 block Mylex DAC960 PCI RAID controller; eleventh controller 2192 0 = /dev/rd/c10d0 First disk, whole disk 2193 8 = /dev/rd/c10d1 Second disk, whole disk 2194 ... 2195 248 = /dev/rd/c10d31 32nd disk, whole disk 2196 2197 Partitions are handled as for major 48. 2198 2199139 block Mylex DAC960 PCI RAID controller; twelfth controller 2200 0 = /dev/rd/c11d0 First disk, whole disk 2201 8 = /dev/rd/c11d1 Second disk, whole disk 2202 ... 2203 248 = /dev/rd/c11d31 32nd disk, whole disk 2204 2205 Partitions are handled as for major 48. 2206 2207140 block Mylex DAC960 PCI RAID controller; thirteenth controller 2208 0 = /dev/rd/c12d0 First disk, whole disk 2209 8 = /dev/rd/c12d1 Second disk, whole disk 2210 ... 2211 248 = /dev/rd/c12d31 32nd disk, whole disk 2212 2213 Partitions are handled as for major 48. 2214 2215141 block Mylex DAC960 PCI RAID controller; fourteenth controller 2216 0 = /dev/rd/c13d0 First disk, whole disk 2217 8 = /dev/rd/c13d1 Second disk, whole disk 2218 ... 2219 248 = /dev/rd/c13d31 32nd disk, whole disk 2220 2221 Partitions are handled as for major 48. 2222 2223142 block Mylex DAC960 PCI RAID controller; fifteenth controller 2224 0 = /dev/rd/c14d0 First disk, whole disk 2225 8 = /dev/rd/c14d1 Second disk, whole disk 2226 ... 2227 248 = /dev/rd/c14d31 32nd disk, whole disk 2228 2229 Partitions are handled as for major 48. 2230 2231143 block Mylex DAC960 PCI RAID controller; sixteenth controller 2232 0 = /dev/rd/c15d0 First disk, whole disk 2233 8 = /dev/rd/c15d1 Second disk, whole disk 2234 ... 2235 248 = /dev/rd/c15d31 32nd disk, whole disk 2236 2237 Partitions are handled as for major 48. 2238 2239144 char Encapsulated PPP 2240 0 = /dev/pppox0 First PPP over Ethernet 2241 ... 2242 63 = /dev/pppox63 64th PPP over Ethernet 2243 2244 This is primarily used for ADSL. 2245 2246 The SST 5136-DN DeviceNet interface driver has been 2247 relocated to major 183 due to an unfortunate conflict. 2248 2249144 block Expansion Area #1 for more non-device (e.g. NFS) mounts 2250 0 = mounted device 256 2251 255 = mounted device 511 2252 2253145 char SAM9407-based soundcard 2254 0 = /dev/sam0_mixer 2255 1 = /dev/sam0_sequencer 2256 2 = /dev/sam0_midi00 2257 3 = /dev/sam0_dsp 2258 4 = /dev/sam0_audio 2259 6 = /dev/sam0_sndstat 2260 18 = /dev/sam0_midi01 2261 34 = /dev/sam0_midi02 2262 50 = /dev/sam0_midi03 2263 64 = /dev/sam1_mixer 2264 ... 2265 128 = /dev/sam2_mixer 2266 ... 2267 192 = /dev/sam3_mixer 2268 ... 2269 2270 Device functions match OSS, but offer a number of 2271 addons, which are sam9407 specific. OSS can be 2272 operated simultaneously, taking care of the codec. 2273 2274145 block Expansion Area #2 for more non-device (e.g. NFS) mounts 2275 0 = mounted device 512 2276 255 = mounted device 767 2277 2278146 char SYSTRAM SCRAMNet mirrored-memory network 2279 0 = /dev/scramnet0 First SCRAMNet device 2280 1 = /dev/scramnet1 Second SCRAMNet device 2281 ... 2282 2283146 block Expansion Area #3 for more non-device (e.g. NFS) mounts 2284 0 = mounted device 768 2285 255 = mounted device 1023 2286 2287147 char Aureal Semiconductor Vortex Audio device 2288 0 = /dev/aureal0 First Aureal Vortex 2289 1 = /dev/aureal1 Second Aureal Vortex 2290 ... 2291 2292147 block Distributed Replicated Block Device (DRBD) 2293 0 = /dev/drbd0 First DRBD device 2294 1 = /dev/drbd1 Second DRBD device 2295 ... 2296 2297148 char Technology Concepts serial card 2298 0 = /dev/ttyT0 First TCL port 2299 1 = /dev/ttyT1 Second TCL port 2300 ... 2301 2302149 char Technology Concepts serial card - alternate devices 2303 0 = /dev/cut0 Callout device for ttyT0 2304 1 = /dev/cut0 Callout device for ttyT1 2305 ... 2306 2307150 char Real-Time Linux FIFOs 2308 0 = /dev/rtf0 First RTLinux FIFO 2309 1 = /dev/rtf1 Second RTLinux FIFO 2310 ... 2311 2312151 char DPT I2O SmartRaid V controller 2313 0 = /dev/dpti0 First DPT I2O adapter 2314 1 = /dev/dpti1 Second DPT I2O adapter 2315 ... 2316 2317152 char EtherDrive Control Device 2318 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive 2319 1 = /dev/etherd/err Monitor errors 2320 2 = /dev/etherd/raw Raw AoE packet monitor 2321 2322152 block EtherDrive Block Devices 2323 0 = /dev/etherd/0 EtherDrive 0 2324 ... 2325 255 = /dev/etherd/255 EtherDrive 255 2326 2327153 char SPI Bus Interface (sometimes referred to as MicroWire) 2328 0 = /dev/spi0 First SPI device on the bus 2329 1 = /dev/spi1 Second SPI device on the bus 2330 ... 2331 15 = /dev/spi15 Sixteenth SPI device on the bus 2332 2333153 block Enhanced Metadisk RAID (EMD) storage units 2334 0 = /dev/emd/0 First unit 2335 1 = /dev/emd/0p1 Partition 1 on First unit 2336 2 = /dev/emd/0p2 Partition 2 on First unit 2337 ... 2338 15 = /dev/emd/0p15 Partition 15 on First unit 2339 2340 16 = /dev/emd/1 Second unit 2341 32 = /dev/emd/2 Third unit 2342 ... 2343 240 = /dev/emd/15 Sixteenth unit 2344 2345 Partitions are handled in the same way as for IDE 2346 disks (see major number 3) except that the limit on 2347 partitions is 15. 2348 2349154 char Specialix RIO serial card 2350 0 = /dev/ttySR0 First RIO port 2351 ... 2352 255 = /dev/ttySR255 256th RIO port 2353 2354155 char Specialix RIO serial card - alternate devices 2355 0 = /dev/cusr0 Callout device for ttySR0 2356 ... 2357 255 = /dev/cusr255 Callout device for ttySR255 2358 2359156 char Specialix RIO serial card 2360 0 = /dev/ttySR256 257th RIO port 2361 ... 2362 255 = /dev/ttySR511 512th RIO port 2363 2364157 char Specialix RIO serial card - alternate devices 2365 0 = /dev/cusr256 Callout device for ttySR256 2366 ... 2367 255 = /dev/cusr511 Callout device for ttySR511 2368 2369158 char Dialogic GammaLink fax driver 2370 0 = /dev/gfax0 GammaLink channel 0 2371 1 = /dev/gfax1 GammaLink channel 1 2372 ... 2373 2374159 char RESERVED 2375 2376159 block RESERVED 2377 2378160 char General Purpose Instrument Bus (GPIB) 2379 0 = /dev/gpib0 First GPIB bus 2380 1 = /dev/gpib1 Second GPIB bus 2381 ... 2382 2383160 block Carmel 8-port SATA Disks on First Controller 2384 0 = /dev/carmel/0 SATA disk 0 whole disk 2385 1 = /dev/carmel/0p1 SATA disk 0 partition 1 2386 ... 2387 31 = /dev/carmel/0p31 SATA disk 0 partition 31 2388 2389 32 = /dev/carmel/1 SATA disk 1 whole disk 2390 64 = /dev/carmel/2 SATA disk 2 whole disk 2391 ... 2392 224 = /dev/carmel/7 SATA disk 7 whole disk 2393 2394 Partitions are handled in the same way as for IDE 2395 disks (see major number 3) except that the limit on 2396 partitions is 31. 2397 2398161 char IrCOMM devices (IrDA serial/parallel emulation) 2399 0 = /dev/ircomm0 First IrCOMM device 2400 1 = /dev/ircomm1 Second IrCOMM device 2401 ... 2402 16 = /dev/irlpt0 First IrLPT device 2403 17 = /dev/irlpt1 Second IrLPT device 2404 ... 2405 2406161 block Carmel 8-port SATA Disks on Second Controller 2407 0 = /dev/carmel/8 SATA disk 8 whole disk 2408 1 = /dev/carmel/8p1 SATA disk 8 partition 1 2409 ... 2410 31 = /dev/carmel/8p31 SATA disk 8 partition 31 2411 2412 32 = /dev/carmel/9 SATA disk 9 whole disk 2413 64 = /dev/carmel/10 SATA disk 10 whole disk 2414 ... 2415 224 = /dev/carmel/15 SATA disk 15 whole disk 2416 2417 Partitions are handled in the same way as for IDE 2418 disks (see major number 3) except that the limit on 2419 partitions is 31. 2420 2421162 char Raw block device interface 2422 0 = /dev/rawctl Raw I/O control device 2423 1 = /dev/raw/raw1 First raw I/O device 2424 2 = /dev/raw/raw2 Second raw I/O device 2425 ... 2426 max minor number of raw device is set by kernel config 2427 MAX_RAW_DEVS or raw module parameter 'max_raw_devs' 2428 2429163 char 2430 2431164 char Chase Research AT/PCI-Fast serial card 2432 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0 2433 ... 2434 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15 2435 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0 2436 ... 2437 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15 2438 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0 2439 ... 2440 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15 2441 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0 2442 ... 2443 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15 2444 2445165 char Chase Research AT/PCI-Fast serial card - alternate devices 2446 0 = /dev/cuch0 Callout device for ttyCH0 2447 ... 2448 63 = /dev/cuch63 Callout device for ttyCH63 2449 2450166 char ACM USB modems 2451 0 = /dev/ttyACM0 First ACM modem 2452 1 = /dev/ttyACM1 Second ACM modem 2453 ... 2454 2455167 char ACM USB modems - alternate devices 2456 0 = /dev/cuacm0 Callout device for ttyACM0 2457 1 = /dev/cuacm1 Callout device for ttyACM1 2458 ... 2459 2460168 char Eracom CSA7000 PCI encryption adaptor 2461 0 = /dev/ecsa0 First CSA7000 2462 1 = /dev/ecsa1 Second CSA7000 2463 ... 2464 2465169 char Eracom CSA8000 PCI encryption adaptor 2466 0 = /dev/ecsa8-0 First CSA8000 2467 1 = /dev/ecsa8-1 Second CSA8000 2468 ... 2469 2470170 char AMI MegaRAC remote access controller 2471 0 = /dev/megarac0 First MegaRAC card 2472 1 = /dev/megarac1 Second MegaRAC card 2473 ... 2474 2475171 char Reserved for IEEE 1394 (Firewire) 2476 2477172 char Moxa Intellio serial card 2478 0 = /dev/ttyMX0 First Moxa port 2479 1 = /dev/ttyMX1 Second Moxa port 2480 ... 2481 127 = /dev/ttyMX127 128th Moxa port 2482 128 = /dev/moxactl Moxa control port 2483 2484173 char Moxa Intellio serial card - alternate devices 2485 0 = /dev/cumx0 Callout device for ttyMX0 2486 1 = /dev/cumx1 Callout device for ttyMX1 2487 ... 2488 127 = /dev/cumx127 Callout device for ttyMX127 2489 2490174 char SmartIO serial card 2491 0 = /dev/ttySI0 First SmartIO port 2492 1 = /dev/ttySI1 Second SmartIO port 2493 ... 2494 2495175 char SmartIO serial card - alternate devices 2496 0 = /dev/cusi0 Callout device for ttySI0 2497 1 = /dev/cusi1 Callout device for ttySI1 2498 ... 2499 2500176 char nCipher nFast PCI crypto accelerator 2501 0 = /dev/nfastpci0 First nFast PCI device 2502 1 = /dev/nfastpci1 First nFast PCI device 2503 ... 2504 2505177 char TI PCILynx memory spaces 2506 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card 2507 ... 2508 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card 2509 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card 2510 ... 2511 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card 2512 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card 2513 ... 2514 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card 2515 2516178 char Giganet cLAN1xxx virtual interface adapter 2517 0 = /dev/clanvi0 First cLAN adapter 2518 1 = /dev/clanvi1 Second cLAN adapter 2519 ... 2520 2521179 block MMC block devices 2522 0 = /dev/mmcblk0 First SD/MMC card 2523 1 = /dev/mmcblk0p1 First partition on first MMC card 2524 8 = /dev/mmcblk1 Second SD/MMC card 2525 ... 2526 2527 The start of next SD/MMC card can be configured with 2528 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe 2529 time using the mmcblk.perdev_minors option. That would 2530 bump the offset between each card to be the configured 2531 value instead of the default 8. 2532 2533179 char CCube DVXChip-based PCI products 2534 0 = /dev/dvxirq0 First DVX device 2535 1 = /dev/dvxirq1 Second DVX device 2536 ... 2537 2538180 char USB devices 2539 0 = /dev/usb/lp0 First USB printer 2540 ... 2541 15 = /dev/usb/lp15 16th USB printer 2542 48 = /dev/usb/scanner0 First USB scanner 2543 ... 2544 63 = /dev/usb/scanner15 16th USB scanner 2545 64 = /dev/usb/rio500 Diamond Rio 500 2546 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de) 2547 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD) 2548 96 = /dev/usb/hiddev0 1st USB HID device 2549 ... 2550 111 = /dev/usb/hiddev15 16th USB HID device 2551 112 = /dev/usb/auer0 1st auerswald ISDN device 2552 ... 2553 127 = /dev/usb/auer15 16th auerswald ISDN device 2554 128 = /dev/usb/brlvgr0 First Braille Voyager device 2555 ... 2556 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device 2557 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device 2558 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device 2559 ... 2560 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device 2561 144 = /dev/usb/lcd USB LCD device 2562 160 = /dev/usb/legousbtower0 1st USB Legotower device 2563 ... 2564 175 = /dev/usb/legousbtower15 16th USB Legotower device 2565 176 = /dev/usb/usbtmc1 First USB TMC device 2566 ... 2567 191 = /dev/usb/usbtmc16 16th USB TMC device 2568 192 = /dev/usb/yurex1 First USB Yurex device 2569 ... 2570 209 = /dev/usb/yurex16 16th USB Yurex device 2571 2572180 block USB block devices 2573 0 = /dev/uba First USB block device 2574 8 = /dev/ubb Second USB block device 2575 16 = /dev/ubc Third USB block device 2576 ... 2577 2578181 char Conrad Electronic parallel port radio clocks 2579 0 = /dev/pcfclock0 First Conrad radio clock 2580 1 = /dev/pcfclock1 Second Conrad radio clock 2581 ... 2582 2583182 char Picture Elements THR2 binarizer 2584 0 = /dev/pethr0 First THR2 board 2585 1 = /dev/pethr1 Second THR2 board 2586 ... 2587 2588183 char SST 5136-DN DeviceNet interface 2589 0 = /dev/ss5136dn0 First DeviceNet interface 2590 1 = /dev/ss5136dn1 Second DeviceNet interface 2591 ... 2592 2593 This device used to be assigned to major number 144. 2594 It had to be moved due to an unfortunate conflict. 2595 2596184 char Picture Elements' video simulator/sender 2597 0 = /dev/pevss0 First sender board 2598 1 = /dev/pevss1 Second sender board 2599 ... 2600 2601185 char InterMezzo high availability file system 2602 0 = /dev/intermezzo0 First cache manager 2603 1 = /dev/intermezzo1 Second cache manager 2604 ... 2605 2606 See http://web.archive.org/web/20080115195241/ 2607 http://inter-mezzo.org/index.html 2608 2609186 char Object-based storage control device 2610 0 = /dev/obd0 First obd control device 2611 1 = /dev/obd1 Second obd control device 2612 ... 2613 2614 See ftp://ftp.lustre.org/pub/obd for code and information. 2615 2616187 char DESkey hardware encryption device 2617 0 = /dev/deskey0 First DES key 2618 1 = /dev/deskey1 Second DES key 2619 ... 2620 2621188 char USB serial converters 2622 0 = /dev/ttyUSB0 First USB serial converter 2623 1 = /dev/ttyUSB1 Second USB serial converter 2624 ... 2625 2626189 char USB serial converters - alternate devices 2627 0 = /dev/cuusb0 Callout device for ttyUSB0 2628 1 = /dev/cuusb1 Callout device for ttyUSB1 2629 ... 2630 2631190 char Kansas City tracker/tuner card 2632 0 = /dev/kctt0 First KCT/T card 2633 1 = /dev/kctt1 Second KCT/T card 2634 ... 2635 2636191 char Reserved for PCMCIA 2637 2638192 char Kernel profiling interface 2639 0 = /dev/profile Profiling control device 2640 1 = /dev/profile0 Profiling device for CPU 0 2641 2 = /dev/profile1 Profiling device for CPU 1 2642 ... 2643 2644193 char Kernel event-tracing interface 2645 0 = /dev/trace Tracing control device 2646 1 = /dev/trace0 Tracing device for CPU 0 2647 2 = /dev/trace1 Tracing device for CPU 1 2648 ... 2649 2650194 char linVideoStreams (LINVS) 2651 0 = /dev/mvideo/status0 Video compression status 2652 1 = /dev/mvideo/stream0 Video stream 2653 2 = /dev/mvideo/frame0 Single compressed frame 2654 3 = /dev/mvideo/rawframe0 Raw uncompressed frame 2655 4 = /dev/mvideo/codec0 Direct codec access 2656 5 = /dev/mvideo/video4linux0 Video4Linux compatibility 2657 2658 16 = /dev/mvideo/status1 Second device 2659 ... 2660 32 = /dev/mvideo/status2 Third device 2661 ... 2662 ... 2663 240 = /dev/mvideo/status15 16th device 2664 ... 2665 2666195 char Nvidia graphics devices 2667 0 = /dev/nvidia0 First Nvidia card 2668 1 = /dev/nvidia1 Second Nvidia card 2669 ... 2670 255 = /dev/nvidiactl Nvidia card control device 2671 2672196 char Tormenta T1 card 2673 0 = /dev/tor/0 Master control channel for all cards 2674 1 = /dev/tor/1 First DS0 2675 2 = /dev/tor/2 Second DS0 2676 ... 2677 48 = /dev/tor/48 48th DS0 2678 49 = /dev/tor/49 First pseudo-channel 2679 50 = /dev/tor/50 Second pseudo-channel 2680 ... 2681 2682197 char OpenTNF tracing facility 2683 0 = /dev/tnf/t0 Trace 0 data extraction 2684 1 = /dev/tnf/t1 Trace 1 data extraction 2685 ... 2686 128 = /dev/tnf/status Tracing facility status 2687 130 = /dev/tnf/trace Tracing device 2688 2689198 char Total Impact TPMP2 quad coprocessor PCI card 2690 0 = /dev/tpmp2/0 First card 2691 1 = /dev/tpmp2/1 Second card 2692 ... 2693 2694199 char Veritas volume manager (VxVM) volumes 2695 0 = /dev/vx/rdsk/*/* First volume 2696 1 = /dev/vx/rdsk/*/* Second volume 2697 ... 2698 2699199 block Veritas volume manager (VxVM) volumes 2700 0 = /dev/vx/dsk/*/* First volume 2701 1 = /dev/vx/dsk/*/* Second volume 2702 ... 2703 2704 The namespace in these directories is maintained by 2705 the user space VxVM software. 2706 2707200 char Veritas VxVM configuration interface 2708 0 = /dev/vx/config Configuration access node 2709 1 = /dev/vx/trace Volume i/o trace access node 2710 2 = /dev/vx/iod Volume i/o daemon access node 2711 3 = /dev/vx/info Volume information access node 2712 4 = /dev/vx/task Volume tasks access node 2713 5 = /dev/vx/taskmon Volume tasks monitor daemon 2714 2715201 char Veritas VxVM dynamic multipathing driver 2716 0 = /dev/vx/rdmp/* First multipath device 2717 1 = /dev/vx/rdmp/* Second multipath device 2718 ... 2719201 block Veritas VxVM dynamic multipathing driver 2720 0 = /dev/vx/dmp/* First multipath device 2721 1 = /dev/vx/dmp/* Second multipath device 2722 ... 2723 2724 The namespace in these directories is maintained by 2725 the user space VxVM software. 2726 2727202 char CPU model-specific registers 2728 0 = /dev/cpu/0/msr MSRs on CPU 0 2729 1 = /dev/cpu/1/msr MSRs on CPU 1 2730 ... 2731 2732202 block Xen Virtual Block Device 2733 0 = /dev/xvda First Xen VBD whole disk 2734 16 = /dev/xvdb Second Xen VBD whole disk 2735 32 = /dev/xvdc Third Xen VBD whole disk 2736 ... 2737 240 = /dev/xvdp Sixteenth Xen VBD whole disk 2738 2739 Partitions are handled in the same way as for IDE 2740 disks (see major number 3) except that the limit on 2741 partitions is 15. 2742 2743203 char CPU CPUID information 2744 0 = /dev/cpu/0/cpuid CPUID on CPU 0 2745 1 = /dev/cpu/1/cpuid CPUID on CPU 1 2746 ... 2747 2748204 char Low-density serial ports 2749 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0 2750 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1 2751 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2 2752 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3 2753 4 = /dev/ttyFB0 Intel Footbridge (ARM) 2754 5 = /dev/ttySA0 StrongARM builtin serial port 0 2755 6 = /dev/ttySA1 StrongARM builtin serial port 1 2756 7 = /dev/ttySA2 StrongARM builtin serial port 2 2757 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0 2758 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1 2759 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2 2760 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3 2761 12 = /dev/ttyFW0 Firmware console - port 0 2762 13 = /dev/ttyFW1 Firmware console - port 1 2763 14 = /dev/ttyFW2 Firmware console - port 2 2764 15 = /dev/ttyFW3 Firmware console - port 3 2765 16 = /dev/ttyAM0 ARM "AMBA" serial port 0 2766 ... 2767 31 = /dev/ttyAM15 ARM "AMBA" serial port 15 2768 32 = /dev/ttyDB0 DataBooster serial port 0 2769 ... 2770 39 = /dev/ttyDB7 DataBooster serial port 7 2771 40 = /dev/ttySG0 SGI Altix console port 2772 41 = /dev/ttySMX0 Motorola i.MX - port 0 2773 42 = /dev/ttySMX1 Motorola i.MX - port 1 2774 43 = /dev/ttySMX2 Motorola i.MX - port 2 2775 44 = /dev/ttyMM0 Marvell MPSC - port 0 2776 45 = /dev/ttyMM1 Marvell MPSC - port 1 2777 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0 2778 ... 2779 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5 2780 50 = /dev/ttyIOC0 Altix serial card 2781 ... 2782 81 = /dev/ttyIOC31 Altix serial card 2783 82 = /dev/ttyVR0 NEC VR4100 series SIU 2784 83 = /dev/ttyVR1 NEC VR4100 series DSIU 2785 84 = /dev/ttyIOC84 Altix ioc4 serial card 2786 ... 2787 115 = /dev/ttyIOC115 Altix ioc4 serial card 2788 116 = /dev/ttySIOC0 Altix ioc3 serial card 2789 ... 2790 147 = /dev/ttySIOC31 Altix ioc3 serial card 2791 148 = /dev/ttyPSC0 PPC PSC - port 0 2792 ... 2793 153 = /dev/ttyPSC5 PPC PSC - port 5 2794 154 = /dev/ttyAT0 ATMEL serial port 0 2795 ... 2796 169 = /dev/ttyAT15 ATMEL serial port 15 2797 170 = /dev/ttyNX0 Hilscher netX serial port 0 2798 ... 2799 185 = /dev/ttyNX15 Hilscher netX serial port 15 2800 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation 2801 187 = /dev/ttyUL0 Xilinx uartlite - port 0 2802 ... 2803 190 = /dev/ttyUL3 Xilinx uartlite - port 3 2804 191 = /dev/xvc0 Xen virtual console - port 0 2805 192 = /dev/ttyPZ0 pmac_zilog - port 0 2806 ... 2807 195 = /dev/ttyPZ3 pmac_zilog - port 3 2808 196 = /dev/ttyTX0 TX39/49 serial port 0 2809 ... 2810 204 = /dev/ttyTX7 TX39/49 serial port 7 2811 205 = /dev/ttySC0 SC26xx serial port 0 2812 206 = /dev/ttySC1 SC26xx serial port 1 2813 207 = /dev/ttySC2 SC26xx serial port 2 2814 208 = /dev/ttySC3 SC26xx serial port 3 2815 209 = /dev/ttyMAX0 MAX3100 serial port 0 2816 210 = /dev/ttyMAX1 MAX3100 serial port 1 2817 211 = /dev/ttyMAX2 MAX3100 serial port 2 2818 212 = /dev/ttyMAX3 MAX3100 serial port 3 2819 2820205 char Low-density serial ports (alternate device) 2821 0 = /dev/culu0 Callout device for ttyLU0 2822 1 = /dev/culu1 Callout device for ttyLU1 2823 2 = /dev/culu2 Callout device for ttyLU2 2824 3 = /dev/culu3 Callout device for ttyLU3 2825 4 = /dev/cufb0 Callout device for ttyFB0 2826 5 = /dev/cusa0 Callout device for ttySA0 2827 6 = /dev/cusa1 Callout device for ttySA1 2828 7 = /dev/cusa2 Callout device for ttySA2 2829 8 = /dev/cusc0 Callout device for ttySC0 2830 9 = /dev/cusc1 Callout device for ttySC1 2831 10 = /dev/cusc2 Callout device for ttySC2 2832 11 = /dev/cusc3 Callout device for ttySC3 2833 12 = /dev/cufw0 Callout device for ttyFW0 2834 13 = /dev/cufw1 Callout device for ttyFW1 2835 14 = /dev/cufw2 Callout device for ttyFW2 2836 15 = /dev/cufw3 Callout device for ttyFW3 2837 16 = /dev/cuam0 Callout device for ttyAM0 2838 ... 2839 31 = /dev/cuam15 Callout device for ttyAM15 2840 32 = /dev/cudb0 Callout device for ttyDB0 2841 ... 2842 39 = /dev/cudb7 Callout device for ttyDB7 2843 40 = /dev/cusg0 Callout device for ttySG0 2844 41 = /dev/ttycusmx0 Callout device for ttySMX0 2845 42 = /dev/ttycusmx1 Callout device for ttySMX1 2846 43 = /dev/ttycusmx2 Callout device for ttySMX2 2847 46 = /dev/cucpm0 Callout device for ttyCPM0 2848 ... 2849 49 = /dev/cucpm5 Callout device for ttyCPM5 2850 50 = /dev/cuioc40 Callout device for ttyIOC40 2851 ... 2852 81 = /dev/cuioc431 Callout device for ttyIOC431 2853 82 = /dev/cuvr0 Callout device for ttyVR0 2854 83 = /dev/cuvr1 Callout device for ttyVR1 2855 2856206 char OnStream SC-x0 tape devices 2857 0 = /dev/osst0 First OnStream SCSI tape, mode 0 2858 1 = /dev/osst1 Second OnStream SCSI tape, mode 0 2859 ... 2860 32 = /dev/osst0l First OnStream SCSI tape, mode 1 2861 33 = /dev/osst1l Second OnStream SCSI tape, mode 1 2862 ... 2863 64 = /dev/osst0m First OnStream SCSI tape, mode 2 2864 65 = /dev/osst1m Second OnStream SCSI tape, mode 2 2865 ... 2866 96 = /dev/osst0a First OnStream SCSI tape, mode 3 2867 97 = /dev/osst1a Second OnStream SCSI tape, mode 3 2868 ... 2869 128 = /dev/nosst0 No rewind version of /dev/osst0 2870 129 = /dev/nosst1 No rewind version of /dev/osst1 2871 ... 2872 160 = /dev/nosst0l No rewind version of /dev/osst0l 2873 161 = /dev/nosst1l No rewind version of /dev/osst1l 2874 ... 2875 192 = /dev/nosst0m No rewind version of /dev/osst0m 2876 193 = /dev/nosst1m No rewind version of /dev/osst1m 2877 ... 2878 224 = /dev/nosst0a No rewind version of /dev/osst0a 2879 225 = /dev/nosst1a No rewind version of /dev/osst1a 2880 ... 2881 2882 The OnStream SC-x0 SCSI tapes do not support the 2883 standard SCSI SASD command set and therefore need 2884 their own driver "osst". Note that the IDE, USB (and 2885 maybe ParPort) versions may be driven via ide-scsi or 2886 usb-storage SCSI emulation and this osst device and 2887 driver as well. The ADR-x0 drives are QIC-157 2888 compliant and don't need osst. 2889 2890207 char Compaq ProLiant health feature indicate 2891 0 = /dev/cpqhealth/cpqw Redirector interface 2892 1 = /dev/cpqhealth/crom EISA CROM 2893 2 = /dev/cpqhealth/cdt Data Table 2894 3 = /dev/cpqhealth/cevt Event Log 2895 4 = /dev/cpqhealth/casr Automatic Server Recovery 2896 5 = /dev/cpqhealth/cecc ECC Memory 2897 6 = /dev/cpqhealth/cmca Machine Check Architecture 2898 7 = /dev/cpqhealth/ccsm Deprecated CDT 2899 8 = /dev/cpqhealth/cnmi NMI Handling 2900 9 = /dev/cpqhealth/css Sideshow Management 2901 10 = /dev/cpqhealth/cram CMOS interface 2902 11 = /dev/cpqhealth/cpci PCI IRQ interface 2903 2904208 char User space serial ports 2905 0 = /dev/ttyU0 First user space serial port 2906 1 = /dev/ttyU1 Second user space serial port 2907 ... 2908 2909209 char User space serial ports (alternate devices) 2910 0 = /dev/cuu0 Callout device for ttyU0 2911 1 = /dev/cuu1 Callout device for ttyU1 2912 ... 2913 2914210 char SBE, Inc. sync/async serial card 2915 0 = /dev/sbei/wxcfg0 Configuration device for board 0 2916 1 = /dev/sbei/dld0 Download device for board 0 2917 2 = /dev/sbei/wan00 WAN device, port 0, board 0 2918 3 = /dev/sbei/wan01 WAN device, port 1, board 0 2919 4 = /dev/sbei/wan02 WAN device, port 2, board 0 2920 5 = /dev/sbei/wan03 WAN device, port 3, board 0 2921 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0 2922 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0 2923 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0 2924 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0 2925 10 = /dev/sbei/wxcfg1 Configuration device for board 1 2926 11 = /dev/sbei/dld1 Download device for board 1 2927 12 = /dev/sbei/wan10 WAN device, port 0, board 1 2928 13 = /dev/sbei/wan11 WAN device, port 1, board 1 2929 14 = /dev/sbei/wan12 WAN device, port 2, board 1 2930 15 = /dev/sbei/wan13 WAN device, port 3, board 1 2931 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1 2932 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1 2933 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1 2934 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1 2935 ... 2936 2937 Yes, each board is really spaced 10 (decimal) apart. 2938 2939211 char Addinum CPCI1500 digital I/O card 2940 0 = /dev/addinum/cpci1500/0 First CPCI1500 card 2941 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card 2942 ... 2943 2944212 char LinuxTV.org DVB driver subsystem 2945 0 = /dev/dvb/adapter0/video0 first video decoder of first card 2946 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card 2947 2 = /dev/dvb/adapter0/sec0 (obsolete/unused) 2948 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card 2949 4 = /dev/dvb/adapter0/demux0 first demux device of first card 2950 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card 2951 6 = /dev/dvb/adapter0/ca0 first common access port of first card 2952 7 = /dev/dvb/adapter0/net0 first network device of first card 2953 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card 2954 9 = /dev/dvb/adapter0/video1 second video decoder of first card 2955 ... 2956 64 = /dev/dvb/adapter1/video0 first video decoder of second card 2957 ... 2958 128 = /dev/dvb/adapter2/video0 first video decoder of third card 2959 ... 2960 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card 2961 2962216 char Bluetooth RFCOMM TTY devices 2963 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device 2964 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device 2965 ... 2966 2967217 char Bluetooth RFCOMM TTY devices (alternate devices) 2968 0 = /dev/curf0 Callout device for rfcomm0 2969 1 = /dev/curf1 Callout device for rfcomm1 2970 ... 2971 2972218 char The Logical Company bus Unibus/Qbus adapters 2973 0 = /dev/logicalco/bci/0 First bus adapter 2974 1 = /dev/logicalco/bci/1 First bus adapter 2975 ... 2976 2977219 char The Logical Company DCI-1300 digital I/O card 2978 0 = /dev/logicalco/dci1300/0 First DCI-1300 card 2979 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card 2980 ... 2981 2982220 char Myricom Myrinet "GM" board 2983 0 = /dev/myricom/gm0 First Myrinet GM board 2984 1 = /dev/myricom/gmp0 First board "root access" 2985 2 = /dev/myricom/gm1 Second Myrinet GM board 2986 3 = /dev/myricom/gmp1 Second board "root access" 2987 ... 2988 2989221 char VME bus 2990 0 = /dev/bus/vme/m0 First master image 2991 1 = /dev/bus/vme/m1 Second master image 2992 2 = /dev/bus/vme/m2 Third master image 2993 3 = /dev/bus/vme/m3 Fourth master image 2994 4 = /dev/bus/vme/s0 First slave image 2995 5 = /dev/bus/vme/s1 Second slave image 2996 6 = /dev/bus/vme/s2 Third slave image 2997 7 = /dev/bus/vme/s3 Fourth slave image 2998 8 = /dev/bus/vme/ctl Control 2999 3000 It is expected that all VME bus drivers will use the 3001 same interface. For interface documentation see 3002 http://www.vmelinux.org/. 3003 3004224 char A2232 serial card 3005 0 = /dev/ttyY0 First A2232 port 3006 1 = /dev/ttyY1 Second A2232 port 3007 ... 3008 3009225 char A2232 serial card (alternate devices) 3010 0 = /dev/cuy0 Callout device for ttyY0 3011 1 = /dev/cuy1 Callout device for ttyY1 3012 ... 3013 3014226 char Direct Rendering Infrastructure (DRI) 3015 0 = /dev/dri/card0 First graphics card 3016 1 = /dev/dri/card1 Second graphics card 3017 ... 3018 3019227 char IBM 3270 terminal Unix tty access 3020 1 = /dev/3270/tty1 First 3270 terminal 3021 2 = /dev/3270/tty2 Seconds 3270 terminal 3022 ... 3023 3024228 char IBM 3270 terminal block-mode access 3025 0 = /dev/3270/tub Controlling interface 3026 1 = /dev/3270/tub1 First 3270 terminal 3027 2 = /dev/3270/tub2 Second 3270 terminal 3028 ... 3029 3030229 char IBM iSeries/pSeries virtual console 3031 0 = /dev/hvc0 First console port 3032 1 = /dev/hvc1 Second console port 3033 ... 3034 3035230 char IBM iSeries virtual tape 3036 0 = /dev/iseries/vt0 First virtual tape, mode 0 3037 1 = /dev/iseries/vt1 Second virtual tape, mode 0 3038 ... 3039 32 = /dev/iseries/vt0l First virtual tape, mode 1 3040 33 = /dev/iseries/vt1l Second virtual tape, mode 1 3041 ... 3042 64 = /dev/iseries/vt0m First virtual tape, mode 2 3043 65 = /dev/iseries/vt1m Second virtual tape, mode 2 3044 ... 3045 96 = /dev/iseries/vt0a First virtual tape, mode 3 3046 97 = /dev/iseries/vt1a Second virtual tape, mode 3 3047 ... 3048 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind 3049 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind 3050 ... 3051 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind 3052 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind 3053 ... 3054 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind 3055 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind 3056 ... 3057 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind 3058 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind 3059 ... 3060 3061 "No rewind" refers to the omission of the default 3062 automatic rewind on device close. The MTREW or MTOFFL 3063 ioctl()'s can be used to rewind the tape regardless of 3064 the device used to access it. 3065 3066231 char InfiniBand 3067 0 = /dev/infiniband/umad0 3068 1 = /dev/infiniband/umad1 3069 ... 3070 63 = /dev/infiniband/umad63 63rd InfiniBandMad device 3071 64 = /dev/infiniband/issm0 First InfiniBand IsSM device 3072 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device 3073 ... 3074 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device 3075 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device 3076 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device 3077 ... 3078 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device 3079 3080232 char Biometric Devices 3081 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device 3082 1 = /dev/biometric/sensor0/iris first iris sensor on first device 3083 2 = /dev/biometric/sensor0/retina first retina sensor on first device 3084 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device 3085 4 = /dev/biometric/sensor0/facial first facial sensor on first device 3086 5 = /dev/biometric/sensor0/hand first hand sensor on first device 3087 ... 3088 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device 3089 ... 3090 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device 3091 ... 3092 3093233 char PathScale InfiniPath interconnect 3094 0 = /dev/ipath Primary device for programs (any unit) 3095 1 = /dev/ipath0 Access specifically to unit 0 3096 2 = /dev/ipath1 Access specifically to unit 1 3097 ... 3098 4 = /dev/ipath3 Access specifically to unit 3 3099 129 = /dev/ipath_sma Device used by Subnet Management Agent 3100 130 = /dev/ipath_diag Device used by diagnostics programs 3101 3102234-239 UNASSIGNED 3103 3104240-254 char LOCAL/EXPERIMENTAL USE 3105 3106240-254 block LOCAL/EXPERIMENTAL USE 3107 Allocated for local/experimental use. For devices not 3108 assigned official numbers, these ranges should be 3109 used in order to avoid conflicting with future assignments. 3110 3111255 char RESERVED 3112 3113255 block RESERVED 3114 3115 This major is reserved to assist the expansion to a 3116 larger number space. No device nodes with this major 3117 should ever be created on the filesystem. 3118 (This is probably not true anymore, but I'll leave it 3119 for now /Torben) 3120 3121---LARGE MAJORS!!!!!--- 3122 3123256 char Equinox SST multi-port serial boards 3124 0 = /dev/ttyEQ0 First serial port on first Equinox SST board 3125 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board 3126 128 = /dev/ttyEQ128 First serial port on second Equinox SST board 3127 ... 3128 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board 3129 3130256 block Resident Flash Disk Flash Translation Layer 3131 0 = /dev/rfda First RFD FTL layer 3132 16 = /dev/rfdb Second RFD FTL layer 3133 ... 3134 240 = /dev/rfdp 16th RFD FTL layer 3135 3136257 char Phoenix Technologies Cryptographic Services Driver 3137 0 = /dev/ptlsec Crypto Services Driver 3138 3139257 block SSFDC Flash Translation Layer filesystem 3140 0 = /dev/ssfdca First SSFDC layer 3141 8 = /dev/ssfdcb Second SSFDC layer 3142 16 = /dev/ssfdcc Third SSFDC layer 3143 24 = /dev/ssfdcd 4th SSFDC layer 3144 32 = /dev/ssfdce 5th SSFDC layer 3145 40 = /dev/ssfdcf 6th SSFDC layer 3146 48 = /dev/ssfdcg 7th SSFDC layer 3147 56 = /dev/ssfdch 8th SSFDC layer 3148 3149258 block ROM/Flash read-only translation layer 3150 0 = /dev/blockrom0 First ROM card's translation layer interface 3151 1 = /dev/blockrom1 Second ROM card's translation layer interface 3152 ... 3153 3154259 block Block Extended Major 3155 Used dynamically to hold additional partition minor 3156 numbers and allow large numbers of partitions per device 3157 3158259 char FPGA configuration interfaces 3159 0 = /dev/icap0 First Xilinx internal configuration 3160 1 = /dev/icap1 Second Xilinx internal configuration 3161 3162260 char OSD (Object-based-device) SCSI Device 3163 0 = /dev/osd0 First OSD Device 3164 1 = /dev/osd1 Second OSD Device 3165 ... 3166 255 = /dev/osd255 256th OSD Device 3167 3168 **** ADDITIONAL /dev DIRECTORY ENTRIES 3169 3170This section details additional entries that should or may exist in 3171the /dev directory. It is preferred that symbolic links use the same 3172form (absolute or relative) as is indicated here. Links are 3173classified as "hard" or "symbolic" depending on the preferred type of 3174link; if possible, the indicated type of link should be used. 3175 3176 3177 Compulsory links 3178 3179These links should exist on all systems: 3180 3181/dev/fd /proc/self/fd symbolic File descriptors 3182/dev/stdin fd/0 symbolic stdin file descriptor 3183/dev/stdout fd/1 symbolic stdout file descriptor 3184/dev/stderr fd/2 symbolic stderr file descriptor 3185/dev/nfsd socksys symbolic Required by iBCS-2 3186/dev/X0R null symbolic Required by iBCS-2 3187 3188Note: /dev/X0R is <letter X>-<digit 0>-<letter R>. 3189 3190 Recommended links 3191 3192It is recommended that these links exist on all systems: 3193 3194/dev/core /proc/kcore symbolic Backward compatibility 3195/dev/ramdisk ram0 symbolic Backward compatibility 3196/dev/ftape qft0 symbolic Backward compatibility 3197/dev/bttv0 video0 symbolic Backward compatibility 3198/dev/radio radio0 symbolic Backward compatibility 3199/dev/i2o* /dev/i2o/* symbolic Backward compatibility 3200/dev/scd? sr? hard Alternate SCSI CD-ROM name 3201 3202 Locally defined links 3203 3204The following links may be established locally to conform to the 3205configuration of the system. This is merely a tabulation of existing 3206practice, and does not constitute a recommendation. However, if they 3207exist, they should have the following uses. 3208 3209/dev/mouse mouse port symbolic Current mouse device 3210/dev/tape tape device symbolic Current tape device 3211/dev/cdrom CD-ROM device symbolic Current CD-ROM device 3212/dev/cdwriter CD-writer symbolic Current CD-writer device 3213/dev/scanner scanner symbolic Current scanner device 3214/dev/modem modem port symbolic Current dialout device 3215/dev/root root device symbolic Current root filesystem 3216/dev/swap swap device symbolic Current swap device 3217 3218/dev/modem should not be used for a modem which supports dialin as 3219well as dialout, as it tends to cause lock file problems. If it 3220exists, /dev/modem should point to the appropriate primary TTY device 3221(the use of the alternate callout devices is deprecated). 3222 3223For SCSI devices, /dev/tape and /dev/cdrom should point to the 3224``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas 3225/dev/cdwriter and /dev/scanner should point to the appropriate generic 3226SCSI devices (/dev/sg*). 3227 3228/dev/mouse may point to a primary serial TTY device, a hardware mouse 3229device, or a socket for a mouse driver program (e.g. /dev/gpmdata). 3230 3231 Sockets and pipes 3232 3233Non-transient sockets and named pipes may exist in /dev. Common entries are: 3234 3235/dev/printer socket lpd local socket 3236/dev/log socket syslog local socket 3237/dev/gpmdata socket gpm mouse multiplexer 3238 3239 Mount points 3240 3241The following names are reserved for mounting special filesystems 3242under /dev. These special filesystems provide kernel interfaces that 3243cannot be provided with standard device nodes. 3244 3245/dev/pts devpts PTY slave filesystem 3246/dev/shm tmpfs POSIX shared memory maintenance access 3247 3248 **** TERMINAL DEVICES 3249 3250Terminal, or TTY devices are a special class of character devices. A 3251terminal device is any device that could act as a controlling terminal 3252for a session; this includes virtual consoles, serial ports, and 3253pseudoterminals (PTYs). 3254 3255All terminal devices share a common set of capabilities known as line 3256disciplines; these include the common terminal line discipline as well 3257as SLIP and PPP modes. 3258 3259All terminal devices are named similarly; this section explains the 3260naming and use of the various types of TTYs. Note that the naming 3261conventions include several historical warts; some of these are 3262Linux-specific, some were inherited from other systems, and some 3263reflect Linux outgrowing a borrowed convention. 3264 3265A hash mark (#) in a device name is used here to indicate a decimal 3266number without leading zeroes. 3267 3268 Virtual consoles and the console device 3269 3270Virtual consoles are full-screen terminal displays on the system video 3271monitor. Virtual consoles are named /dev/tty#, with numbering 3272starting at /dev/tty1; /dev/tty0 is the current virtual console. 3273/dev/tty0 is the device that should be used to access the system video 3274card on those architectures for which the frame buffer devices 3275(/dev/fb*) are not applicable. Do not use /dev/console 3276for this purpose. 3277 3278The console device, /dev/console, is the device to which system 3279messages should be sent, and on which logins should be permitted in 3280single-user mode. Starting with Linux 2.1.71, /dev/console is managed 3281by the kernel; for previous versions it should be a symbolic link to 3282either /dev/tty0, a specific virtual console such as /dev/tty1, or to 3283a serial port primary (tty*, not cu*) device, depending on the 3284configuration of the system. 3285 3286 Serial ports 3287 3288Serial ports are RS-232 serial ports and any device which simulates 3289one, either in hardware (such as internal modems) or in software (such 3290as the ISDN driver.) Under Linux, each serial ports has two device 3291names, the primary or callin device and the alternate or callout one. 3292Each kind of device is indicated by a different letter. For any 3293letter X, the names of the devices are /dev/ttyX# and /dev/cux#, 3294respectively; for historical reasons, /dev/ttyS# and /dev/ttyC# 3295correspond to /dev/cua# and /dev/cub#. In the future, it should be 3296expected that multiple letters will be used; all letters will be upper 3297case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the 3298"cu" device (e.g. /dev/cudp#). 3299 3300The names /dev/ttyQ# and /dev/cuq# are reserved for local use. 3301 3302The alternate devices provide for kernel-based exclusion and somewhat 3303different defaults than the primary devices. Their main purpose is to 3304allow the use of serial ports with programs with no inherent or broken 3305support for serial ports. Their use is deprecated, and they may be 3306removed from a future version of Linux. 3307 3308Arbitration of serial ports is provided by the use of lock files with 3309the names /var/lock/LCK..ttyX#. The contents of the lock file should 3310be the PID of the locking process as an ASCII number. 3311 3312It is common practice to install links such as /dev/modem 3313which point to serial ports. In order to ensure proper locking in the 3314presence of these links, it is recommended that software chase 3315symlinks and lock all possible names; additionally, it is recommended 3316that a lock file be installed with the corresponding alternate 3317device. In order to avoid deadlocks, it is recommended that the locks 3318are acquired in the following order, and released in the reverse: 3319 3320 1. The symbolic link name, if any (/var/lock/LCK..modem) 3321 2. The "tty" name (/var/lock/LCK..ttyS2) 3322 3. The alternate device name (/var/lock/LCK..cua2) 3323 3324In the case of nested symbolic links, the lock files should be 3325installed in the order the symlinks are resolved. 3326 3327Under no circumstances should an application hold a lock while waiting 3328for another to be released. In addition, applications which attempt 3329to create lock files for the corresponding alternate device names 3330should take into account the possibility of being used on a non-serial 3331port TTY, for which no alternate device would exist. 3332 3333 Pseudoterminals (PTYs) 3334 3335Pseudoterminals, or PTYs, are used to create login sessions or provide 3336other capabilities requiring a TTY line discipline (including SLIP or 3337PPP capability) to arbitrary data-generation processes. Each PTY has 3338a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named 3339/dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by 3340allowing each master side to be opened only once. 3341 3342Once the master side has been opened, the corresponding slave device 3343can be used in the same manner as any TTY device. The master and 3344slave devices are connected by the kernel, generating the equivalent 3345of a bidirectional pipe with TTY capabilities. 3346 3347Recent versions of the Linux kernels and GNU libc contain support for 3348the System V/Unix98 naming scheme for PTYs, which assigns a common 3349device, /dev/ptmx, to all the masters (opening it will automatically 3350give you a previously unassigned PTY) and a subdirectory, /dev/pts, 3351for the slaves; the slaves are named with decimal integers (/dev/pts/# 3352in our notation). This removes the problem of exhausting the 3353namespace and enables the kernel to automatically create the device 3354nodes for the slaves on demand using the "devpts" filesystem. 3355 3356