DriveTrust
DriveTrust is a hard drive technology developed by Seagate that was first widely used with DVR's and later introduced to personal computers with the Seagate Momentus 5400 FDE.2. This technology encrypts the data on the hard drive and only allows that data to be read by the device or computer the drive was first installed into.
Because this technology is built onto the hard drive, computers can have these drives installed with no additional software or patches. In addition, the drives have a feature that allow them to be instantly erased to prevent any sensitive data being read when the drive is sold or used in another computer.
Also see: Encryption, Hard drive definitions