


There are several tools available that can be used to wipe a hard drive containing confidential data.

Overwrites a pseudo-random value and verifies the overwrite Overwrites the compliment of Pass 1 (i.e., Zero) Then there are other versions of DOD 5220.22-M that are often used for wiping confidential files from a hard drive or other storage devices that stipulate the use of up to seven passes. According to the US Department of Defense, a hard drive should be overwritten at least three times. Overwriting data many times makes it unrecoverable and keeps the drive usable. The DOD 5220.22-M of the US Department of Defense (DOD) is a data erasure standard that states that data on a hard drive or any storage drive should be overwritten multiple times for proper sanitization of the data.
