Right click on Command Prompt and click Run as Administrator.Īlternatively, you can also open the Command Prompt by pressing Windows+R > Type CMD > Press Enter. Open Start Menu and type CMD to find Command Prompt.Insert your USB flash drive into your computer.To create your bootable USB with the help of CMD, first, you need to format the USB drive using diskpart. Create Bootable USB without any software on Windows 10 (Using CMD)