From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id C409F13800E for ; Thu, 9 Aug 2012 13:55:04 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id AECBBE079D; Thu, 9 Aug 2012 13:54:50 +0000 (UTC) Received: from mail-yx0-f181.google.com (mail-yx0-f181.google.com [209.85.213.181]) by pigeon.gentoo.org (Postfix) with ESMTP id 4F6A5E06FE for ; Thu, 9 Aug 2012 13:53:31 +0000 (UTC) Received: by yenq13 with SMTP id q13so478102yen.40 for ; Thu, 09 Aug 2012 06:53:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; bh=0VR+cgRJ38y/V2svhR//YhMFtghPpnJcz6liuZx0TqE=; b=hTyKTHfjO7woOLdRvzIxxknkO+j+Ifln2K7hmsADDZmBTNMrkHGvOH6PsBfG1mn0Ox P3/XYliJwrCCaCdtMmzsVoZ4ataDoZrLHeg0yof2Q0Q6S5dcPWUrxGzf2wfyxPoCcm9J 6/fQswSEDuZHcF6bVm5xh0b/jEMj04KSMaf7o+x59HduZ1zv71lUhzBQEdYJc+hQMy2y Q5huUgHIuS+mC57b+CM02uhlz0Pi+LCNwyRTYe47eLAOLROoQCKZYXvPktruqgJYC/hI mcYEG9Voi5VzSzKBPsP6Uw98sMZqAJkLE48QkqZsX1jetDq6bmgliIsUbj7F93oh/2EA qrsQ== Received: by 10.101.132.3 with SMTP id j3mr6427871ann.57.1344520410746; Thu, 09 Aug 2012 06:53:30 -0700 (PDT) Received: from [192.168.2.5] (adsl-65-0-123-153.jan.bellsouth.net. [65.0.123.153]) by mx.google.com with ESMTPS id y10sm2064599yhd.6.2012.08.09.06.53.28 (version=SSLv3 cipher=OTHER); Thu, 09 Aug 2012 06:53:29 -0700 (PDT) Message-ID: <5023C0D7.5090401@gmail.com> Date: Thu, 09 Aug 2012 08:53:27 -0500 From: Dale User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120717 Firefox/14.0.1 SeaMonkey/2.11 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Want to seriously test a NEW hard drive References: <501E6AFA.4000205@gmail.com> <50219626.5010806@gmail.com> <5021CC94.3050701@gmail.com> <20120809153030.3144816f@weird.wonkology.org> In-Reply-To: <20120809153030.3144816f@weird.wonkology.org> X-Enigmail-Version: 1.4.3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: 8b246fd3-fadd-45ed-bb7e-edbfccc2e2be X-Archives-Hash: 11b0a3581454da59775576149227a622 Alex Schuster wrote: > Dale writes: > >> I have seen where people use dd to do this sort of thing to. I read >> somewhere that if you do a dd and put in all 1's, then all 0's then back >> again that it is very hard to get any data back off the drive. I think >> if you do it like over a dozen times, it is deemed impossible to get >> anything back. I think that is the Government standard of it's gone. > There's no need for multiple passes of dd with different values. > > http://www.h-online.com/security/news/item/Secure-deletion-a-single-overwrite-will-do-it-739699.html > > Wonko > > I wonder what some Government org like NSA would think about this? Then again, they may want us to believe this so they can get stuff back. ;-) ;-) That said, I always wondered how something can be there when it is erased. On paper, I can see that because it made a physical change to the paper but on magnetic media, it is magnetic not physical. Anyway. Dale :-) :-) -- I am only responsible for what I said ... Not for what you understood or how you interpreted my words!