Many of today’s computers have built in the ability to boot from USB sources. This can become valuable when your computer’s hard disk, floppy disk or, CD-ROM drive become inaccessible. If you aren’t sure that your computer supports USB Boot, you can check your BIOS settings. To view, enter your BIOS start-up screen at boot (usually by pressing ESC, F2, F10 after you press the power button); navigate to the boot options, and look for options that start with “USB” (like “USB Key”). If the option is listed, then your computer has USB Boot capabilities.