Diskeeper 2008 Professional Edition - Complete Package (N66972) Category: Utility Software Disk subsystems supported - Primary Partitions, Extended Partitions, Logical Drives, Volume Sets, RAID Arrays (hardware and software), Mirrored Disks, and Mounted Volumes (letter-less drives) System Requirements - 11MB Free Space, Windows Vista, XP and 2000, and Microsoft Management Console (MMC)