Active@ KillDisk is a secure data removal program that provides the perfect solution to anyone who is either donating their computer or selling it to someone else and wants to ensure that their private data has been properly deleted.
Active@ KillDisk erases all data on HDD and USB disks completely (the process removes ALL data from a physical disk(s) or logical drive's surface), also Active@ KillDisk can wipes out all unused space on disks, not touching existing data. Large sized RAIDs (disk arrays) sanitizing supported as well. The Ultimate version includes complete Linux Installation instead of just TAR archive. Its console supports Secure Erase - a low level ATA command for hardware erasing.