You can create bootable Windows Vista or Windows 7 on USB flash drives as long as the flash drive has the capacity to store the entire.
image of Windows Vista or the original DVD, or the diskpart utility to create the bootable USB.
This tutorial will help you in creating a bootable USB drive of Windows Vista which you can use to install Vista in any system. First format your USB drive in NTFS file system. Now you can boot using your USB drive and can install Windows Vista in any system.
Need to install Windows 7 on a computer with no drive? Do you want to create a backup installer in case your install cd becomes damaged?.
To install the software, you can make one copy of the ISO file on a disc, USB flash drive, Windows XP SP2, Windows Vista, or Windows 7 (32-bit or 64-bit).