Casper makes upgrading and backing up your Windows 2000/XP/Vista hard disk a snap. Use Casper to keep a complete and fully bootable backup of your system. If your system hard disk fails or becomes corrupted, boot your computer directly from your backup hard disk and you're up and running again in seconds. Schedule the backup to be performed at virtually any time. Casper can even perform the copy in the background while you continue to use your computer. The program also makes upgrading your system hard disk to a larger hard disk a breeze. Casper runs entirely from within Windows, and intelligent wizards guide you every step of the way.