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From: Emanuel Strobl <Emanuel.strobl@gmx.net>
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Date: Tue, 23 Aug 2005 04:47:12 +0200
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Cc: Mike Jeays <Mike.Jeays@rogers.com>,
	Danny MacMillan <flowers@users.sourceforge.net>,
	Sebastian Pahlke <sp.ibm@gmx.de>
Subject: Re: dd is so slow on my SCSI disc
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Am Dienstag, 23. August 2005 04:29 CEST schrieb Mike Jeays:
> On Mon, 2005-08-22 at 20:57, Danny MacMillan wrote:
> > Sebastian Pahlke wrote:
> > > Hi all,
> > >
> > > I'm trying to "clean" a disc before selling them:
> > >
> > > dd if=3D/dev/zero of=3D/dev/da0
> >
> > You may want to consider using /dev/random instead of, or in
> > combination with, /dev/zero.  Zeroing out a disk isn't a significant
> > barrier to forensic analysis.
> >
[...]
>
> Using /dev/random is much, much slower than /dev/zero.
>
He quoted correctly and his statment wasn't about speed, but about the=20
purpose of the original action; To "clean" discs before selling....
I'm not sure if single-writing nulls or randoms makes any difference; I=20
think it doesn't, but his post wasn't incorrect!

=2DHarry

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