From owner-freebsd-questions@FreeBSD.ORG Tue Jul 8 15:01:56 2003 Return-Path: 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 491D937B401 for ; Tue, 8 Jul 2003 15:01:56 -0700 (PDT) Received: from rdsnet.ro (mail.rdsnet.ro [193.231.236.16]) by mx1.FreeBSD.org (Postfix) with SMTP id DAE8743F93 for ; Tue, 8 Jul 2003 15:01:54 -0700 (PDT) (envelope-from itetcu@buh.cameradicommercio.ro) Received: (qmail 18780 invoked from network); 8 Jul 2003 22:01:53 -0000 Received: from unknown (HELO buh.cameradicommercio.ro) (81.196.25.19) by mail.rdsnet.ro with SMTP; 8 Jul 2003 22:01:53 -0000 Received: from buh.cameradicommercio.ro (localhost [127.0.0.1]) h68M1sbJ081243; Wed, 9 Jul 2003 01:01:54 +0300 (EEST) (envelope-from itetcu@buh.cameradicommercio.ro) Received: from localhost (localhost [[UNIX: localhost]]) by buh.cameradicommercio.ro (8.12.9/8.12.9/Submit) id h68M1q1t081242; Wed, 9 Jul 2003 01:01:52 +0300 (EEST) From: Ion-Mihai Tetcu To: Chuck Swiger Date: Wed, 9 Jul 2003 01:01:52 +0300 User-Agent: KMail/1.5.2 References: <200307081546.52889.itetcu2@xnet.ro> <200307082309.37378.itetcu2@xnet.ro> <3F0B2CDB.8090800@mac.com> In-Reply-To: <3F0B2CDB.8090800@mac.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200307090101.52233.itetcu2@xnet.ro> cc: questions@freebsd.org Subject: Re: dd an audio cd on 5.x ? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2003 22:01:56 -0000 On Tuesday 08 July 2003 23:43, Chuck Swiger wrote: > Ion-Mihai Tetcu wrote: > > On Tuesday 08 July 2003 22:55, Lowell Gilbert wrote: > > [ ... ] > > >> That command will copy a data disk, but you have separate > >> tracks on this thing. > > > > Ok. And if I want to copy bit by bit ? > > You'd have to obtain the glass master used to press the original to > get an absolutely exact copy. "bit-by-bit" accuracy of the raw CD is > not very easy or even desirable to obtain due to ECC hardware fixing > minor errors: for audio, you want a "bit-by-bit" accurate copy of the > data after ECC processing, not before. OK, do you know any method to do it under BSD ? There are some cdtools in the ports that claim to do DAE - but I haven't the time to look in thecode to see how it is done and if there is any difference between using a SCSI an an IDE drive. > Better CD-burners let you do something known as DAO+96 ot TAO+96, > which lets you override the ECC hardware when reading or writing, and > thus copy even the errors from the original, which can be useful for > copy-protected data CD's rather than for audio.... We have a potential client who asked about studying both cases and make him a app that could say if it's an "original" or not so this sounds interesting (we're pretty new on this). Thanks, IOnut