Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mephisto!prism!duke!flur
From: flur@duke.gatech.edu (Peter W. Flur)
Newsgroups: comp.sys.next
Subject: Optical Disk Woes Again
Keywords: problems, optical, drives
Message-ID: <9051@hydra.gatech.EDU>
Date: 8 May 90 12:01:48 GMT
Sender: news@prism.gatech.EDU
Followup-To: flur@duke.gatech.edu
Distribution: na
Organization: Computer Engineering Group, Georgia Tech, Atlanta, GA 30332-0250
Lines: 19

I've taken two old optical disks and re-formatted them using the disk
utility.  When I try to write large files (~60M) to them for backup, I
get the following messages relatively frequently.  Could someone
explain what it means and how to correct the problem?

May  7 12:45:31 duke mach: od0a: read failed (linear encoder failed) block 104440 phys block 105752 (10758:0:8)
May  7 12:45:31 duke mach: od0?: write re-spin (invalid or unimplemented command) block 0 phys block 0 (4149:0:0)
May  7 12:45:55 duke mach: od0a: read re-spin (linear encoder failed) block 105176 phys block 106488 (10804:0:8)
May  7 12:46:10 duke mach: IO error on pageout: error = 5.
May  7 12:46:10 duke mach: vnode_pageout: failed!
May  7 12:46:31 duke mach: od0a: write re-spin (linear encoder failed) block 104408 phys block 105720 (10756:0:8)
May  7 12:47:14 duke mach: od0a: write re-spin (linear encoder failed) block 105120 phys block 106432 (10801:0:0)
May  7 12:47:17 duke mach: od0a: write re-spin (linear encoder failed) block 10




Thanks,
Peter