From owner-freebsd-questions@FreeBSD.ORG Thu Jul 19 14:12:54 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8A36C1065670 for ; Thu, 19 Jul 2012 14:12:54 +0000 (UTC) (envelope-from feenberg@nber.org) Received: from mail2.nber.org (mail2.nber.org [66.251.72.79]) by mx1.freebsd.org (Postfix) with ESMTP id 444B88FC15 for ; Thu, 19 Jul 2012 14:12:54 +0000 (UTC) Received: from nber9.nber.org (nber9.nber.org [66.251.72.178]) by mail2.nber.org (8.14.4/8.14.4) with ESMTP id q6JDrwOK040169 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 19 Jul 2012 09:53:59 -0400 (EDT) (envelope-from feenberg@nber.org) Date: Thu, 19 Jul 2012 09:53:58 -0400 (EDT) From: Daniel Feenberg To: FreeBSD In-Reply-To: Message-ID: References: <201207190253.q6J2r3p0070058@mail.r-bonomi.com> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Anti-Virus: Kaspersky Anti-Virus for Linux Mail Server 5.6.39/RELEASE, bases: 20120719 #8589823, check: 20120719 clean Subject: Re: fsck on FAT32 filesystem? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Jul 2012 14:12:54 -0000 On Thu, 19 Jul 2012, Carmel wrote: > On Thu, 19 Jul 2012 10:15:17 +0200 (CEST) > Wojciech Puchar articulated: > >>> 1) There's a _reason_ the gov't requires hard drives with anthing >>> higher than 'somewhat' classified data on them to be =physically= >>> destroyed before leving the secure area. >> >> no. for modern hard drives it was already proved that >> >> dd if=/dev/zero of=/dev/disk bs=1m >> >> is enough to make data unreadable. >> >> for very old drives it may not > > Would you be so kind as to point out the proof of that statement? > Please provide an address or location where the documentation > supporting that statement can be found. By the way, "NOT READABLE" is > not equal to "UNRECOVERABLE". I hesitate to intervene in this dispute, but my posting "Can intelligence agencies recover overwritten data?" at http://www.nber.org/sys-admin/overwritten-data-gutmann.html will iluminate this discussion. dan feenberg > > -- > Carmel ? > carmel_ny@hotmail.com > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >