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Date:      Mon, 22 Aug 2005 22:29:16 -0400
From:      Mike Jeays <Mike.Jeays@rogers.com>
To:        Danny MacMillan <flowers@users.sourceforge.net>
Cc:        Sebastian Pahlke <sp.ibm@gmx.de>, freebsd-questions@freebsd.org
Subject:   Re: dd is so slow on my SCSI disc
Message-ID:  <1124764156.95639.3.camel@chaucer>
In-Reply-To: <430A7496.6080206@users.sourceforge.net>
References:  <007301c5a755$ea1ee840$6701a8c0@monster> <430A7496.6080206@users.sourceforge.net>

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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=/dev/zero of=/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.
> 
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Using /dev/random is much, much slower than /dev/zero.




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