What do you do when your computer will not boot, your most recent backup is three months old, you don’t have an emergency CD? What if you’re using a Laptop that doesn’t even have a CD drive? Say goodbye to your data!!! OR just whip out the bootable USB Key (or Thumb Drive) you prepared in advance. The key will boot into a free Windows-based system called BartPE (Bart’s Preinstalled Environment), devised by Bart Lagerweij, from which you can copy files on your hard drive to the key, or in some cases, send them over a network to another computer. Not all computers can boot from all USB Keys; you’ll need to experiment a little with yours since there’s no way to predict if it’ll work.