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On Fri, 3 Jan 2003, Michael wrote:
> > I've just hooked the drive up to another box and done a
> >
> > dd if=/dev/zero of=/dev/hdb bs=4096
> >
> > And let it run to completion.
>
> I'd suggest running at least one pass with random numbers before zeroing
> if your at all paranoid. Use /dev/random or something like that.
Why is that? After all bits have been flipped to zero, where is the
information stored about their previous states?
Mike
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