Steps To Make USB Flash Drive Bootable Using CMD (Command Prompt) Here is a simple way to turn USB flash drive into bootable media to install any version of Windows like XP, 7, 8, 8.1 and Windows 10. Many such tools have limitations and take a long time to format and write Windows files into the USB flash drive.Clonezilla not only makes the process of cloning systems easy, it also makes the process more flexible by allowing the user to clone to a local disk, USB-attached device, or networked share.(eg via CloneZilla) Note: Some special applications settings may be in system folders, eg LAMP, see below in the thread. This operation should not damage your documents but, for security, backup your documents and settings (including /home hidden files) on external disk or DVDs.