A bootable USB drive is a tool that formats a USB drive or USB drive and converts it into a bootable Windows 7 image, which is very useful for ebooks and non-DVD drives. "The USB stick that can be booted up, all you need is a USB stick of at least 4GB and a Windows 7 image that can be taken from the original DVD or directly from an ISO image. The process takes three steps, formatting, copying and (function () {('review-app-page-desktop');}); in practice we encountered errors while initializing the USB key To solve this problem, we recommend that you select "FAST" as the formatting method from the USB boot options.