From owner-freebsd-questions Thu Nov 18 14: 4: 4 1999 Delivered-To: freebsd-questions@freebsd.org Received: from ns.clientlogic.com (ns.clientlogic.com [207.51.66.75]) by hub.freebsd.org (Postfix) with ESMTP id 0828015193 for ; Thu, 18 Nov 1999 14:03:57 -0800 (PST) (envelope-from ChrisMic@clientlogic.com) Received: by site0s1 with Internet Mail Service (5.5.2650.21) id ; Thu, 18 Nov 1999 17:03:59 -0500 Message-ID: <6C37EE640B78D2118D2F00A0C90FCB4401105D9A@site2s1> From: Christopher Michaels To: "FreeBSD Questions (E-mail)" Subject: Off topic (was: secure filesystem wiping) Date: Thu, 18 Nov 1999 17:03:56 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG If we could have a quote of the week, I think this would be it! :) -Chris > -----Original Message----- > From: Peter Jeremy [SMTP:jeremyp@gsmx07.alcatel.com.au] > Sent: Thursday, November 18, 1999 3:52 PM > To: TrouBle > Cc: security@FreeBSD.ORG; questions@FreeBSD.ORG > Subject: Re: secure filesystem wiping > > 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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message