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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!spool.mu.edu!newspump.sol.net!news-peer.gsl.net!news.gsl.net!news.sgi.com!news.mathworks.com!news.sprintlink.net!news-peer.sprintlink.net!news.sprintlink.net!news-pull.sprintlink.net!news.sprintlink.net!news-pen-4.sprintlink.net!coopnews.coop.net!hops.entertain.com!stout.entertain.com!not-for-mail From: dwatson@stout.entertain.com (Darryl Watson) Newsgroups: comp.unix.bsd.bsdi.misc Subject: Sector errors, how to repair? Date: 10 Oct 1996 16:23:01 -0600 Organization: ABWAM, Inc., full service ISP, voice: 1+ 303 730-6050 Lines: 32 Message-ID: <53jt05$2sf@stout.entertain.com> NNTP-Posting-Host: stout.entertain.com Help! I am running BSDI 2.0 with patches, and my system disk is registering serious errors. Below is a taste of the /var/log/messages file: Oct 10 16:15:41 stout kernel: sd0: sn 577999: media error: unrecovered read error (18 retries) Oct 10 16:15:41 stout kernel: sd0: retry 2 Oct 10 16:15:41 stout kernel: sd0: sn 577999: media error: unrecovered read error (18 retries) Oct 10 16:15:48 stout kernel: sd0: sn 577999: media error: unrecovered read error (18 retries) Oct 10 16:15:48 stout kernel: sd0: retry 1 Oct 10 16:15:48 stout kernel: sd0: sn 577999: media error: unrecovered read error (18 retries) Oct 10 16:15:48 stout kernel: sd0: retry 2 Oct 10 16:15:48 stout kernel: sd0: sn 577999: media error: unrecovered read error (18 retries) I brought the system down to single user mode, and ran diskdefect thus: # diskdefect -a -swcv sd0 12345678 But after a few minutes of churning on the disk, it registers read errors on a differnet sector number than mentioned above, and crashes with a core dump, saying 'memory fault'. I have also run fsck, but didn't have the guts to fool with 'badsect'. Does anyone have any suggestions as to how I can salvage my system disk (on which I have done backups!) without replacing it? TIA!