From owner-freebsd-questions@FreeBSD.ORG Mon Jul 25 17:41:58 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 82A5B16A41F for ; Mon, 25 Jul 2005 17:41:58 +0000 (GMT) (envelope-from glenn@antimatter.net) Received: from cobalt.antimatter.net (cobalt.antimatter.net [69.55.224.239]) by mx1.FreeBSD.org (Postfix) with ESMTP id 436CA43D49 for ; Mon, 25 Jul 2005 17:41:58 +0000 (GMT) (envelope-from glenn@antimatter.net) Received: from glenn-mobile.antimatter.net (cpe-66-27-86-22.san.res.rr.com [66.27.86.22]) (authenticated bits=0) by cobalt.antimatter.net (8.13.4/8.13.4) with ESMTP id j6PHfumA032526 (version=TLSv1/SSLv3 cipher=DES-CBC3-SHA bits=168 verify=NO); Mon, 25 Jul 2005 10:41:57 -0700 Message-Id: <6.1.0.6.2.20050725103726.10b56b50@cobalt.antimatter.net> X-Sender: lists@cobalt.antimatter.net X-Mailer: QUALCOMM Windows Eudora Version 6.1.0.6 Date: Mon, 25 Jul 2005 10:38:31 -0700 To: garys@opusnet.com (Gary W. Swearingen), Brian Henning From: Glenn Dawson In-Reply-To: References: <1f75ab0e05072510117c119a1d@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Cc: freebsd-questions@freebsd.org Subject: Re: burncd - verify burn 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: Mon, 25 Jul 2005 17:41:58 -0000 At 10:38 AM 7/25/2005, Gary W. Swearingen wrote: >Brian Henning writes: > > > I would like to know a process to verify that I my cd burner has > > burned an ISO file correctly with burncd. I know I can take some > > precautions like checking the md5sum of the iso during a transfer from > > the Internet. I also read on the Internet that burncd does puts some > > extra padding at the end of the cd. I am not sure if that is true or > > not. Could someone tell me how to verify a cd burn? > >Here's a crummy script I just used to burn and verify a CD, but I've >only tested it with the "cdrecord" setup. Older versions of it worked >with "burncd" on older OS versions, but I can tell you that the reason >I'm using "cdrecord" is that my manual efforts to do this with >"burncd" on 5.4-RELEASE (and maybe 5.4-STABLE a couple weeks ago) >failed, because I couldn't "dd" a CD burned with "burncd". (IE, I >couldn't sucessfully "dd" /dev/acd0, while I could "dd" /dev/cd0). did you use bs=2048 when dd'ing from /dev/acd0? -Glenn