[Ilugc] Overwriting hard disk
- From: kapil@xxxxxxxxxxx (Kapil Hari Paranjape)
- Date: Wed Dec 10 23:15:57 2008
Hello,
On Wed, 10 Dec 2008, Arun Khan wrote:
One of my hard disk is showing symptoms of impending failure. Before
sending it for replacement, I would like to blank out the entire disk
(80GB in my case).
Is the following sufficient?
dd if=/dev/zero of=/dev/sdb1 bs=1K count=78148161 (sdb1 is the entire
disk - MBR)
I think you should probably blank /dev/sdb rather than /dev/sdb1.
Also if the person who buys your disk wants to analyse it
magnetically and has the equipment to do so :) then this is not
enough.
In that case you need to run something like "shred".
Kapil.
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