Before getting started, note that the data from your USB drive will automatically clean and make sure the command prompt is running as administrator. Follow the steps below to create bootable USB using command prompt (CMD): Insert a USB flash drive into a running computer. Open a Command Prompt window as an administrator. Type diskpart . In the new command line window that opens, to determine the USB flash drive number or drive letter, at the command prompt, type list disk , and then click ENTER. The list disk command displays all the disks on the computer. Note the drive number or drive letter of the USB flash drive. At the command prompt, type select disk <X> , where X is the drive number or drive letter of the USB flash drive, and then click ENTER. Type clean , and the click ENTER. This command deletes all data from the USB flash drive. To create a new primary partition on the USB flash drive, type create p...