From owner-freebsd-questions@FreeBSD.ORG Thu Jan 17 17:00:45 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 09DA216A418 for ; Thu, 17 Jan 2008 17:00:45 +0000 (UTC) (envelope-from jcw@highperformance.net) Received: from mx1.highperformance.net (dsl081-163-122.sea1.dsl.speakeasy.net [64.81.163.122]) by mx1.freebsd.org (Postfix) with ESMTP id E940513C442 for ; Thu, 17 Jan 2008 17:00:44 +0000 (UTC) (envelope-from jcw@highperformance.net) Received: from w16.stradamotorsports.com (w16.stradamotorsports.com [192.168.1.16]) by mx1.highperformance.net (8.13.8/8.13.8) with ESMTP id m0HGxfvt046471; Thu, 17 Jan 2008 08:59:41 -0800 (PST) (envelope-from jcw@highperformance.net) Message-ID: <478F8980.1090301@highperformance.net> Date: Thu, 17 Jan 2008 08:59:44 -0800 From: "Jason C. Wells" User-Agent: Thunderbird 2.0.0.9 (X11/20071201) MIME-Version: 1.0 To: Marc Silver References: <478F0D5A.9090107@highperformance.net> <20080117081414.GB12470@draenor.org> <478F1049.3000706@boosten.org> <20080117083837.GC12470@draenor.org> <20080117094332.K1563@wojtek.tensor.gdynia.pl> <20080117090210.GD12470@draenor.org> In-Reply-To: <20080117090210.GD12470@draenor.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.9 required=2.5 tests=ALL_TRUSTED,BAYES_05 autolearn=failed version=3.1.6 X-Spam-Checker-Version: SpamAssassin 3.1.6 (2006-10-03) on s4.stradamotorsports.com Cc: Wojciech Puchar , freebsd general questions , Peter Boosten Subject: Re: Gutman Method on Empty Space 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, 17 Jan 2008 17:00:45 -0000 Marc Silver wrote: > Obviously it all comes down to how important the data is that you're > removing, but a single write is not enough if the data needs to be > disposed of 'securely'. Yep. The magnetic media retains a trace of everything that was recorded on it. If you have recorded over an old cassette tape, you may still be able to discern the original recording under the new recording. Gutmann method might be excessive but any software that uses it shows a seriousness about security. Plus I don't have to do all that writing. The computer does it for me. Wipe looks like a good start. Thanks for the tip. Later, Jason