[nylug-talk] fast and safe way to erase data from drive

[Tino Dai]

And then saw the hard drive into quarters. That's way an ex-military
sysadmin told me when he was dispose of hard drive on site.

-Tino

On Wed, 2003-05-21 at 14:50, Henning Follmann wrote:
> On Wed, May 21, 2003 at 01:40:27PM -0400, Yang Xiao wrote:
> > Hi,
> > what's the best way to erase data from drives?
> > 
> > 
> > Thanks,
> > 
> > Yang
> > 
> 
> 
> 
> Depending on you security level there might be different level
> of delete. Following standards for deleting data do exist:
> 
> rm : - ; no security
> 
> single pass: overwriting one time with either 1 or 0 ; overwritten data
> can be restored with special devices but invisible for all known OSs.
> 
> DoD 5220.22-M: three overwrites, 1 defined pattern, 2 random, 3
> complement of step 1; no restore known yet
> 
> DoD 5220.22-M ECE aka NISPOM: apply DoD 5220.22-M two times with one
> overwrite of random in between; paranoid
> 
> Peter Gutmann: based on a talk of Peter Gutmann in 1996 "Secure Deletion
> of Data from Magnetic Solid State Memory" . Actually it consists of 35
> overwrites of pseudo random pattern; paranoid
> 
> wipe implements "Gutmann"
> 
> bestcrypt from Jetico implements all listed standards ( price is < $50
> afaik)
> 
> 
> 
> Henning
> 
> -- 
> Henning Follmann          |   hfollmann at itcfollmann.com
> it consulting             |  http://www.itcfollmann.com
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