der.hans wrote:

>moin moin,
>
>talked to a co-worker tonight about a need to wipe a bunch of disks. He
>pointed out that there's a hidden feature in newer IDE and SATA drives
>that supposedly does a real delete of data for every single block on the
>drive.
>
>http://blogs.zdnet.com/storage/?p=129&tag=nl.e539
>
>Are there any Free Software programs that can trigger this type of erase?
>
>Is there a similar type of erase for SCSI?
>
>ciao,
>
>der.hans
>  
>
When I need to securely erase a harddrive I use Darik's Boot and Nuke 
[1]. It's a bootable CD that will overwrite the drive for 1 or up to 35 
passes.

 From a higher level there are the utilities shread and srm that you may 
already have installed. These work at a filesystem level.

[1] http://dban.sourceforge.net

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