incremental disk wipe?

[Karl Auer]

On Sun, 2015-03-08 at 15:22 +1100, blind Pete wrote:
> Some disk manufactures claim that all data on the platter is encrypted 
> with a random key and that secure deletion only requires changing 
> the key.  I'm not sure that I would trust them to get it right, but it 
> should be very quick and even take care of data on re-allocated 
> sectors.  
> Have a look at "man hdparm".  

If you use hdparm, be extremely careful what you do. Double check every
command, ideally get someone else to check it too.

Misuse of hdparm can cause major data loss, or even render your hard
disk permanently (yes, permanently) unusable.

Regards, K.


-- 
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Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
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