From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 5E718138334 for ; Fri, 14 Dec 2018 10:31:36 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 2B085E0A97; Fri, 14 Dec 2018 10:31:28 +0000 (UTC) Received: from mx-relay43-hz1.antispameurope.com (mx-relay43-hz1.antispameurope.com [94.100.133.219]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 7A0CBE0A8F for ; Fri, 14 Dec 2018 10:31:25 +0000 (UTC) Received: from smtpsrv2.fokus.fraunhofer.de ([195.37.77.176]) by mx-relay43-hz1.antispameurope.com; Fri, 14 Dec 2018 11:31:14 +0100 Received: from heisenberg.fokus.fraunhofer.de (heisenberg.fokus.fraunhofer.de [10.147.9.211]) by smtpsrv2.fokus.fraunhofer.de (8.14.4/8.14.4) with ESMTP id wBEAV2op002231 (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Fri, 14 Dec 2018 11:31:02 +0100 Received: from heisenberg.fokus.fraunhofer.de (10.147.9.211) by heisenberg.fokus.fraunhofer.de (10.147.9.211) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Fri, 14 Dec 2018 11:31:01 +0100 Received: from rigel (10.147.9.171) by heisenberg.fokus.fraunhofer.de (10.147.9.211) with Microsoft SMTP Server id 15.1.1591.10 via Frontend Transport; Fri, 14 Dec 2018 11:31:01 +0100 Date: Fri, 14 Dec 2018 11:31:01 +0100 From: Joerg Schilling To: Subject: Re: [gentoo-user] Software for checking CDs and DVDs for errors? Message-ID: <5c138665.gRZr7EA3clfDJjMT%Joerg.Schilling@fokus.fraunhofer.de> References: <87y396h8xs.fsf@edu.turkuamk.fi> <9f7a8ff6-d431-1deb-132c-f6e78ff4cfa9@gentoo.org> In-Reply-To: <9f7a8ff6-d431-1deb-132c-f6e78ff4cfa9@gentoo.org> User-Agent: Heirloom mailx 12.5 7/5/10 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 X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit X-KSE-ServerInfo: heisenberg.fokus.fraunhofer.de, 9 X-KSE-AttachmentFiltering-Interceptor-Info: protection disabled X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 14.12.2018 07:47:00 X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-cloud-security-sender:joerg.schilling@fokus.fraunhofer.de X-cloud-security-recipient:gentoo-user@lists.gentoo.org X-cloud-security-Virusscan:CLEAN X-cloud-security-disclaimer: This E-Mail was scanned by E-Mailservice on mx-relay43-hz1.antispameurope.com with 6BD6C7A257B X-cloud-security-connect: smtpsrv2.fokus.fraunhofer.de[195.37.77.176], TLS=1, IP=195.37.77.176 X-cloud-security:scantime:3.168 X-Archives-Salt: 2629620f-d719-403f-a74f-c5aa73b13217 X-Archives-Hash: 5b436c187bde3bc260a6ab41d96308a2 Steve Dibb wrote: > On 12/3/18 9:27 AM, Pouru Lasse wrote: > > I've got a bunch of scratched disc-based games (PS2, Xbox 360) that I'd > > like to check for errors. Is there any program for Linux that does this? > > I found and tried dvdisaster, but it only works for CDs, not > > DVDs. Everything else seems to be Windows-only. > > > > - Lasse > > > > For DVDs, I use ddrescue. Keep a log of it as well in case you want to > do a second pass or just see where it's puking. Use its blocksize of 2048: > > ddrescue -b 2048 /dev/sr0 dvd.iso ddrescue.log readcd is better for any optical media as it is able to directly send SCSI commands. Note that readcd implements the error recovery from sdd(1), that exists since 35 years and I also prefer for normal disks. With software that operates at block driver level, you depend on the error recovery features from the OS driver. Use the options -noerror and retries= (the latter makes sense with a retry count > 128 as 128 is the default) and set up a low read speed as this reduces media flitting. Jörg -- EMail:joerg@schily.net (home) Jörg Schilling D-13353 Berlin joerg.schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.org/private/ http://sf.net/projects/schilytools/files/'