How do I boot a pen drive by command?

  

To boot a pen drive by command, you will need to enter your computer's BIOS or UEFI settings and change the boot order to prioritize the USB drive. The exact steps to do this will depend on your computer's manufacturer and model. Here are some general steps you can follow:

1.Insert the pen drive into a USB port on your computer.

2.Restart your computer.

3.Look for a message that appears on the screen during startup indicating which key you need to press to enter the BIOS or UEFI settings. The key may be F2, F10, Del, or Esc, depending on your computer's manufacturer.

4.Press the indicated key to enter the BIOS or UEFI settings.

5.Use the arrow keys to navigate to the Boot tab or menu.

6.Find the option to change the boot order and move the USB drive to the top of the list. This will ensure that your computer boots from the USB drive before attempting to boot from the hard drive.

7.Save the changes and exit the BIOS or UEFI settings.

8.Your computer should now boot from the pen drive.

Note that the process for entering the BIOS or UEFI settings and changing the boot order may differ depending on your computer's manufacturer and model. You may need to consult the documentation that came with your computer or check the manufacturer's website for specific instructions.