Differential backupDifferential backup allows users to copy files created or changed since the last full or incremental backup. It does not mark files as having been backed up. If you are performing a combination of full and differential backups, restoration of files and folders requires that you have the last full as well as the last differential backup.
Testimonials and User Comments
 Congratulations on getting PC Magazine's Editor's Choice Award for Acronis True Image 6. It's been my choice for months. Glad I recognized outstanding software, even before PC Magazine told us it was outstanding.
It's pulled me out of many crisis situations, so I consider it as essential as tires on a car, or water to drink.
Sometimes I wonder if I'm just burning images for the fun of using Acronis True Image. Hum?
Anyway, keep the great products coming. I also like Acronis Partition Expert.
Elliott
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Acronis Inc. Backup software.