From owner-freebsd-scsi Thu Sep 27 10:31:42 2001 Delivered-To: freebsd-scsi@freebsd.org Received: from no-spam.it.helsinki.fi (NO-SPAM.it.helsinki.fi [128.214.205.34]) by hub.freebsd.org (Postfix) with ESMTP id 6CAE537B40C for ; Thu, 27 Sep 2001 10:31:38 -0700 (PDT) Received: from mursu.pesa.fi (root@sirppi.helsinki.fi [128.214.205.27]) by no-spam.it.helsinki.fi (8.11.4/8.11.4-SPAMmers-sod-off) with ESMTP id f8RHVYV16279 for ; Thu, 27 Sep 2001 20:31:34 +0300 (EEST) Received: (from poku@localhost) by mursu.pesa.fi (8.11.4/8.11.1) id f8RHUvC07299; Thu, 27 Sep 2001 20:30:57 +0300 (EEST) (envelope-from poku@mursu.pesa.fi) To: freebsd-scsi@FreeBSD.ORG Subject: Medium error on dd'ing from a CD From: Jussi Reissell Date: 27 Sep 2001 20:30:56 +0300 Message-ID: <87hetobkxb.fsf@mursu.pesa.fi> Lines: 23 User-Agent: Gnus/5.0803 (Gnus v5.8.3) Emacs/20.7 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi, I get the following errors when issuing a $ dd if=/dev/rcd0c of=cd2 bs=64k dd: /dev/rcd0c: Input/output error 2081+0 records in 2081+0 records out 136380416 bytes transferred in 68.991715 secs (1976765 bytes/sec) And in the logs I find: (cd0:sym0:0:0:0): READ(10). CDB: 28 0 0 4 c0 20 0 0 6 0 (cd0:sym0:0:0:0): MEDIUM ERROR info:4c024 asc:6,0 (cd0:sym0:0:0:0): No reference position found (cd0:sym0:0:0:0): cddone: got error 0x5 back The disk is a data disk. On a cursory inspection the image produced with dd seems ok, despite the errors. I get the error on a couple of disks I've burnt on some HP burner and my own Plextor. One commercial (data) CD doesn't give any errors. Should I be concerned? I'm running on 4.3-stable, the CD-writer is a Plextor hanging off of a Tekram 390u2w controller. Further details upon request. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message