Date: Fri, 19 Nov 1999 07:52:11 +1100 From: Peter Jeremy <jeremyp@gsmx07.alcatel.com.au> To: TrouBle <trouble@netquick.net> Cc: security@FreeBSD.ORG, questions@FreeBSD.ORG Subject: Re: secure filesystem wiping Message-ID: <99Nov19.074604est.40354@border.alcanet.com.au> In-Reply-To: <3833923C.10A7208F@netquick.net> References: <Pine.BSF.4.01.9911172336080.5008-100000@phoenix.aye.net> <3833923C.10A7208F@netquick.net>
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On 1999-Nov-18 16:44:28 +1100, TrouBle wrote:
>obliterate only wipes the one file you specify.. i want to wipe all the
>free space on the disk, without damaging good intact files on it,
This isn't technically possible. You can't securely wipe data from a
disk using the disks own R/W head/electronics (which is the only way
to preserve intact files).
I'd suggest the following:
1) Copy wanted files to another disk.
2) Wipe unwanted files off original disk using one of the following:
a) Raise temperature of entire disk drive to >>1000 degrees, stir
well and (optionally) add plenty of oxygen. Cool and pulverise.
b) Open drive housing and gently manicure each platter with an
angle grinder.
> linux
>has a progrtam called wipe that does this,
Not securely.
>> The thread was "Secure deletion". There is a handy prog in Message-ID
>> <378A58EA.ACF1412F@softweyr.com>
You can specify a disk partition instead of a file if you want.
Peter
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