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Message-ID: <642958cc0509301410p5782472bw9866e5a66fb5ed8b@mail.gmail.com>
Date: Fri, 30 Sep 2005 17:10:52 -0400
From: Mark Shields <laebshade@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Good command for wiping a hard drive?
In-Reply-To: <5bdc1c8b0509301334n7aff4434j449f085a4a4e8336@mail.gmail.com>
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Deleting and recreating new, different partitions isn't enough, as the raw
data is still there. I would use /dev/urandom combined /bin/dd. Never done
this before, but *should* work. Boot from the gentoo livecd (or some other
livecd that provides a full working linux environment), type dd
if=3D/dev/urandom of=3D/dev/hda conv=3Dnotrunc . Run that about 10 times (y=
ou do
want it securely erased right?) or however many times you feel is necessary=
.
Use dlcfdd instead of dd if you can, as with an extra CLI option
(sizeprobe=3Dof) you can get a progress bar.

On 9/30/05, Mark Knecht <markknecht@gmail.com> wrote:
>
> Hi,
> Sold my laptop on Ebay. It was dual boot Gentoo/XP Pro and had
> financial data on it. I'd like to pretty securely wipe the drive
> before shipping. I've already deleted all 10 partitions and written
> new partitions on which are different sizes and different file
> systems. What simple command can Ido to write data to the whole drive?
>
> After doing this I will be deleting all partitions again and
> running the XP reinstall disk from Compaq so that the new buyer gets a
> machine more or less ready for him to work. (I offered to set him up
> with Gentoo but he didn't byte.) ;-)
>
> Cheers,
> Mark
>
> --
> gentoo-user@gentoo.org mailing list
>
>


--
- Mark Shields

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Deleting and recreating new, different partitions isn't enough, as the
raw data is still there.&nbsp; I would use /dev/urandom combined
/bin/dd.&nbsp; Never done this before, but *should* work.&nbsp; Boot
from the gentoo livecd (or some other livecd that provides a full
working linux environment), type dd if=3D/dev/urandom of=3D/dev/hda
conv=3Dnotrunc .&nbsp; Run that about 10 times (you do want it securely
erased right?) or however many times you feel is necessary.&nbsp; Use
dlcfdd instead of dd if you can, as with an extra CLI option
(sizeprobe=3Dof) you can get a progress bar.<br><br><div><span class=3D"gma=
il_quote">On 9/30/05, <b class=3D"gmail_sendername">Mark Knecht</b> &lt;<a =
href=3D"mailto:markknecht@gmail.com">markknecht@gmail.com</a>&gt; wrote:</s=
pan>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, =
204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>&nbsp;&nbs=
p; Sold my laptop on Ebay. It was dual boot Gentoo/XP Pro and had<br>financ=
ial data on it. I'd like to pretty securely wipe the drive
<br>before shipping. I've already deleted all 10 partitions and written<br>=
new partitions on which are different sizes and different file<br>systems. =
What simple command can Ido to write data to the whole drive?<br><br>&nbsp;=
&nbsp; After doing this I will be deleting all partitions again and
<br>running the XP reinstall disk from Compaq so that the new buyer gets a<=
br>machine more or less ready for him to work. (I offered to set him up<br>=
with Gentoo but he didn't byte.) ;-)<br><br>Cheers,<br>Mark<br><br>--<br>
<a href=3D"mailto:gentoo-user@gentoo.org">gentoo-user@gentoo.org</a> mailin=
g list<br><br></blockquote></div><br><br clear=3D"all"><br>-- <br>- Mark Sh=
ields

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