Keriver 1-Click Restore Pro is a very easy but powerful OS backup and restore software. This program has the following features: 1. Back up the operating system while you are using it. 2. It can makes incremental or differential backups after the initial full backup (i.e. only back up the changes which occurred since the last backup or the last full backup.) 3. Multiple snapshots: you can choose whichever snapshot to revert your system to. 4. Even system partition is fully formatted, it still can be reverted. 5. The backup drive can be hard disk, removable hard disk and USB flash drive as well. 6. Ability to recover files from snapshots. 7. Ability to schedule task of creating snapshot. 8. Snapshot management, including create, lock, unlock, delete. 9. It does not deteriorate PC system performance. 10. Ability to create backups in recovery console. 11. Supports 64-bit Vista and Windows 7.