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disk scrubbing

Refers to a software utility used to completely  wipe-out  hard disk drives. This type of utility can usually overwrite single files, unused space on a disk, or a whole disk drive, using a series of algorithms to make it highly unlikely that anyone could ever retrieve the original data from the disk.

Also see "Are Deleted Files Completely Erased?" in the "Did You Know . . . ?" section of Webopedia.







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