From owner-freebsd-questions@FreeBSD.ORG Tue Aug 23 06:28:43 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7727616A41F for ; Tue, 23 Aug 2005 06:28:43 +0000 (GMT) (envelope-from tedm@toybox.placo.com) Received: from mail.freebsd-corp-net-guide.com (mail.web-strider.com [65.75.192.90]) by mx1.FreeBSD.org (Postfix) with ESMTP id C29CB43D46 for ; Tue, 23 Aug 2005 06:28:42 +0000 (GMT) (envelope-from tedm@toybox.placo.com) Received: from tedwin2k (nat-rtr.freebsd-corp-net-guide.com [65.75.197.130]) by mail.freebsd-corp-net-guide.com (8.11.1/8.11.1) with SMTP id j7N6UNb47789; Mon, 22 Aug 2005 23:30:23 -0700 (PDT) (envelope-from tedm@toybox.placo.com) From: "Ted Mittelstaedt" To: "Danny MacMillan" , "Sebastian Pahlke" Date: Mon, 22 Aug 2005 23:28:28 -0700 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 In-Reply-To: <430A7496.6080206@users.sourceforge.net> Importance: Normal Cc: freebsd-questions@freebsd.org Subject: RE: dd is so slow on my SCSI disc 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: Tue, 23 Aug 2005 06:28:43 -0000 dd works a lot better if you set the buffersize to higher than the default. Ted >-----Original Message----- >From: owner-freebsd-questions@freebsd.org >[mailto:owner-freebsd-questions@freebsd.org]On Behalf Of Danny MacMillan >Sent: Monday, August 22, 2005 5:58 PM >To: Sebastian Pahlke >Cc: freebsd-questions@freebsd.org >Subject: Re: dd is so slow on my SCSI disc > > >Sebastian Pahlke wrote: >> Hi all, >> >> I'm trying to "clean" a disc before selling them: >> >> dd if=/dev/zero of=/dev/da0 > >You may want to consider using /dev/random instead of, or in combination >with, /dev/zero. Zeroing out a disk isn't a significant barrier to >forensic analysis. > >_______________________________________________ >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" > >-- >No virus found in this incoming message. >Checked by AVG Anti-Virus. >Version: 7.0.338 / Virus Database: 267.10.14/79 - Release Date: >8/22/2005 > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.10.14/79 - Release Date: 8/22/2005