On Thu, 2004-11-25 at 16:09 -0500, Robert Storey wrote: > I've heard from a security expert that one pass of /dev/random won't be > enough. Seven passes is said to be sufficient that even the most > sophisticated equipment won't be able to recover the data. > > Darik's Boot and Nuke runs three passes over the entire hard disk, so > running it three times would be more than enough. Even one run would be > nearly 99% effective, but do it three time if you're ultra paranoid. According to http://dban.sourceforge.net/features.html DBAN does not *just* do Quick Erases. Maybe 3 passes of American DoD 5220-22.M Standard Wipe is "good enough". The ultra paranoid use grinders or belt sanders on their aluminum platters, and a hammer on the modern glass platters. -- ----------------------------------------------------------------- Ron Johnson, Jr. Jefferson, LA USA PGP Key ID 8834C06B I prefer encrypted mail. In 1929, when the Great Depresion hit, while all the other tabulating companies retrenched, Thomas Watson Sr. insisted that IBM's factories stay open and R&D spending increase. Thus, in 1935 when FDR signed the Social Security Act, and businesses and gov't had a huge need for tabulating/sorting machines, IBM was in position to dominate the industry, and did so for the next 45 years.
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