From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id A661A138CC0 for ; Thu, 19 Mar 2015 10:29:06 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 00CA2E08BD; Thu, 19 Mar 2015 10:29:01 +0000 (UTC) Received: from mx-relay41-dus.antispameurope.com (mx-relay41-dus.antispameurope.com [94.100.134.241]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 99165E0872 for ; Thu, 19 Mar 2015 10:28:58 +0000 (UTC) Received: from smtpsrv1.fokus.fraunhofer.de ([195.37.77.166]) by mx-gate41-dus.antispameurope.com; Thu, 19 Mar 2015 11:28:56 +0100 Received: from DIRAC.fokus.fraunhofer.de ([IPv6:2001:638:806:9::201]) by smtpsrv1.fokus.fraunhofer.de (8.14.4/8.14.4) with ESMTP id t2JASu1a020624 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=OK) for ; Thu, 19 Mar 2015 11:28:56 +0100 Received: from rigel (10.147.13.100) by DIRAC.fokus.fraunhofer.de (10.147.9.201) with Microsoft SMTP Server id 14.3.224.2; Thu, 19 Mar 2015 11:28:56 +0100 Date: Thu, 19 Mar 2015 11:28:55 +0100 From: Joerg Schilling To: Subject: Re: [gentoo-user] Re: Damaged CD medium Message-ID: <550aa4e7.C3jJMl7cO70ZUAMx%Joerg.Schilling@fokus.fraunhofer.de> References: <201503131631.02862.michaelkintzios@gmail.com> <201503161626.18854.michaelkintzios@gmail.com> <55070a16.vqEIci9+glfm0MwN%Joerg.Schilling@fokus.fraunhofer.de> <201503162006.07804.michaelkintzios@gmail.com> In-Reply-To: <201503162006.07804.michaelkintzios@gmail.com> User-Agent: nail 11.22 3/20/05 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 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit X-KSE-Antivirus-Interceptor-Info: 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-gate41-dus with 69D29201800A X-cloud-security-connect: smtpsrv1.fokus.fraunhofer.de[195.37.77.166], TLS=, IP=195.37.77.166 X-cloud-security:scantime:.1918 X-Archives-Salt: 919b6253-159e-4369-bc86-cb665d194a6c X-Archives-Hash: 0773badc76a361f3a8b2c3ab2b56e299 Mick wrote: > > This is an error at the layer above the audio sector. You may try to use: > > > > cdrecord -noerror -edc-corr > > I think you meant to say: > > readcd -noerror -edc-corr You are of course correct. > This is was I am getting. > > # readcd -noerror -edc-corr > No target specified, trying to find one... > Using dev=2,0,0. > Read speed: 22160 kB/s (CD 125x, DVD 16x, BD 4x). > Write speed: 22160 kB/s (CD 125x, DVD 16x, BD 4x). > Capacity: 250000 Blocks = 500000 kBytes = 488 MBytes = 512 prMB > Sectorsize: 2048 Bytes > Copy from SCSI (2,0,0) disk to file '/dev/null' > end: 250000 > readcd: Input/output error. read_cd: scsi sendcmd: no error > CDB: BE 00 00 00 00 00 00 00 37 F8 00 00 > status: 0x2 (CHECK CONDITION) > Sense Bytes: 70 00 05 00 00 00 00 0E 00 00 00 00 64 00 00 00 > Sense Key: 0x5 Illegal Request, Segment 0 > Sense Code: 0x64 Qual 0x00 (illegal mode for this track) Fru 0x0 > Sense flags: Blk 0 (not valid) > cmd finished after 0.016s timeout 40s > readcd: Input/output error. Cannot read source disk > readcd: Retrying from sector 0. > . > readcd: Input/output error. Error on sector 0 not corrected. Total of 1 > errors. > readcd: -noerror set, continuing ... > . > readcd: Input/output error. Error on sector 1 not corrected. Total of 2 > errors. > readcd: -noerror set, continuing ... > . > readcd: Input/output error. Error on sector 2 not corrected. Total of 3 > errors. > readcd: -noerror set, continuing ... > . > readcd: Input/output error. Error on sector 3 not corrected. Total of 4 > errors. > readcd: -noerror set, continuing ... > > > The count of errors runs in the thousands, until I cancel the command. As mentioned, the high level error correction in readcd can only help when the drive does not include a decent Reed Solomon implementation in it's firmware. What you could do is to check other sector ranges to find out whether the hole capacity of the CD is unreadable or whether there are readable parts inside. Note however that if you come close to the outer edge of the CD (1-2cm) the error rate usually increases. check the sectors= option in the man page... 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://sourceforge.net/projects/schilytools/files/'