How to format USB OR Flash Drive using command prompt (cmd) ?
Using Diskpart to re-partition a USB stick Some USB keys have been found to have various partition table set-ups that the USB software will not work with. You can use Windows Diskpart to re-format a USB key and re-partition it. Open a Command Window (cmd) Enter diskpart Enter list disk (it is important you KNOW which disk is the USB key you are formatting) Enter select disk x where x is your USB key Enter clean Enter create part primary Enter select part 1 Enter active Enter format fs=fat32 label="Imran" (Label is optional - ensures USB key is labelled as Imran in Explorer etc) The process can take some time, but the USB is now operational for Imran USB Erase.