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[PLUG] Re: copying harddisks
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On Wed, Jan 10, 2001 at 08:09:31PM +0100, MaD dUCK wrote:
> just to confirm - if i have two identical harddisks, then having them
> both in a linux system, unmounted, and doing a
>
> dd if=/dev/hdb of=/dev/hdc
Should be fine, but I'm not positive dd respects partition maps (and
writes them back out properly), so test hdc before you do this:
> dd if=/dev/zero of=/dev/hdb
>
> a couple of times would securely screw all data on there...
Erm... multiple times won't make much difference. Security deletes
are usually acheived the same way memory tests are: write over with
one pattern, then another pattern, then the first pattern again.
Just dd'ing /dev/zero really ought to be sufficient, though...
~ g r @ eclipsed.net
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