

So make sure that you have backup the files in the USB drive. After you have clicked the Start button, it will format your USB drive and set the MS-DOS startup files into it.

Click Start to create the bootable USB drive.So let's boot to our DOS bootable USB key again: So let's refresh our memory, whats on this disc again? Type 'DIR' and press enter to get a list of files on the drive. On the last box, browse for the DOS system files that you have extracted earlier in Step 1.Tick on the option Create a DOS startup disk.Select the thumb drive from the drop down list.

