Flash boot 2.2c

FlashBoot is a tool to make USB storage devices bootable. FlashBoot supports USB thumb drives and USB HDDs. FlashBoot partitions, formats USB storage device and then automatically installs operating system files to it. Supported operating systems: Windows 8/7/Vista/XP, SysLinux-based disks, GRUB4DOS disks, Linux kernel etc. You may create blank bootable USB flash with minimal set of system files and then manually tune it for your needs, or convert a full-featured bootable CD-ROM or floppy disk to bootable USBflash keeping all functionality.

Why do you might want to use bootable USB flash disks?

Unlike the most bootable medias, bootable USB flash keys are very handy: compared to floppies, they have much bigger size, speed and reliability, compared to CD/DVD discs, they are random write access devices, so you can backup your data to the same media where you booted from, without need to reformat (reburn) the entire media. Again, the cost per gigabyte for them continues to cut down, unlike CD/DVD discs.