This is a great free program for backing up your Boot Camp partition. It is very simple to use. It's available at http://www.twocanoes.com/winclone/ I tried the backup function, but didn't want to attempt a restore. Then I tried to access Boot Camp through Parallels (not related to the backup.) Unfortunately, I got a fatal systems error of a system file missing. Without a backup I would have to try to repair Windows or re-install. Given the circumstances, I did a WinClone restore. It took about 15 min (10 GB file) and worked flawlessly. From now on I plan to do a WinClone before testing new upgrades as well as routine backups.