FlashBoot. A self-contained software tool to quickly and easily create bootable USB flash drives. If you’ve ever fancied carrying around your own computer on a keychain, this may be what you’re looking for. $26.00/€19.95.
And the most important thing is that you can use bootable USB Flash Disk almost everywhere, on any PC that has USB port. Are you going to repair your PC at your work without CD-ROMs, floppies or other media? No problems anymore. Or you have a laptop but without a CD-ROM drive? Even if with a CD-ROM drive, you can’t work with it for a long time: boot device is accessed quite often, and battery power is obviously not enough to supply laser for a long time.