# Running


## Starting the System

After the burning is complete, perform the following steps to start the system:

> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**<br/>
> This operation procedure is required only if this is the first time you burn an image for the standard system.

1. In DevEco Device Tool, click **Monitor** to open the serial port tool.

   ![en-us_image_0000001227082162](figures/en-us_image_0000001227082162.png)

2. Restart the development board. Before the autoboot countdown ends, press any key to enter the system.

   ![en-us_image_0000001271202289](figures/en-us_image_0000001271202289.gif)

3. Run the following commands to set system boot parameters:
   
   ```
   setenv bootargs 'mem=640M console=ttyAMA0,115200 mmz=anonymous,0,0xA8000000,384M clk_ignore_unused rootdelay=10 hardware=Hi3516DV300 init=/init root=/dev/ram0 rw blkdevparts=mmcblk0:1M(boot),15M(kernel),20M(updater),2M(misc),3307M(system),256M(vendor),-(userdata)';
   ```

   
   ```
   setenv bootcmd 'mmc read 0x0 0x82000000 0x800 0x4800; bootm 0x82000000'
   ```

   ![en-us_image_0000001271562269](figures/en-us_image_0000001271562269.png)

4. Save the parameter settings.
   
   ```
   save
   ```

   ![en-us_image_0000001226762210](figures/en-us_image_0000001226762210.png)

5. Restart the development board to start the system.
   
   ```
   reset
   ```

   ![en-us_image_0000001226602238](figures/en-us_image_0000001226602238.png)


## Running a Hello World Program

After the system is started, start the serial port tool, run the **helloworld** command in any directory, and press **Enter**. If the message "Hello World!" is displayed, the program runs successfully.

![en-us_image_0000001271322277](figures/en-us_image_0000001271322277.png)

## Next

Congratulations! You have finished all steps! Proceed to [develop a sample](../guide/device-clock-guide.md) to better familiarize yourself with OpenHarmony development.