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Message-ID: <40F6721A.8626.312BD77@localhost>
From: wszumera at chartermi.net (wszumera@...rtermi.net)
Subject: Erasing a hard disk easily
On 14 Jul 2004 at 10:05, Maarten wrote:
> > dd if=/dev/zero of=/dev/hd? ; dd if=/dev/urandom of=/dev/hd?
>
> I agree. But be advised that using /dev/urandom is several orders of
> magnitude slower than either /dev/zero or /dev/full, so if you're not
> paranoid or the data isn't that sensitive, you might want to opt for only
> writing zeros and ones instead...
>
> maarten@...her:~> time dd if=/dev/urandom of=/dev/null count=10000
> 10000+0 records in
> 10000+0 records out
>
> real 0m4.770s
> user 0m0.016s
> sys 0m4.513s
Thanks for the tip. 63mb took 67 minutes just doing \dev\zero on a drive that I am
sending back to maxtor under warranty. This was a usefull thread Box is 800 mhz
AMD. This was the most usefull thread I on full-disclosure I have read this year.
Btw, booting knoppix on a box with framebuffer for video requires something like
knoppix mem=??? where ??? equals memory - memory dedicated to video. For
example, on my 256M box, 256 didn't work but a number low enough to leave out
memory used by frame buffer booted fine.
Wes
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