*BSD News Article 66600


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From: cfanning@jingoro.prevmed.sunysb.edu (Chris Fanning)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Disk read errors?  FAILURE?
Date: 21 Apr 1996 15:56:30 -0000
Organization: University at Stony Brook
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References: <4l53g6$eh1@jingoro.prevmed.sunysb.edu> <4l6f9m$1oj@uriah.heep.sax.de>
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J Wunsch (j@uriah.heep.sax.de) wrote:
: cfanning@jingoro.prevmed.sunysb.edu (Chris Fanning) writes:

: >Apr 18 06:14:06 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd0d1
: >    asc:16,0 Data synchronization mark error
: >Apr 18 06:17:32 jingoro /kernel: sd0(ncr0:0:0): MEDIUM ERROR info:3cd423
: >    asc:11,0 Unrecovered read error

: >With several more of each deleted for brevity.  The disk should be in perfect
: >operating order...?  Is it?  Or could something else be causing these errors?

: It's your disk.

: If it's new, better have it replaced.  Well, `synch mark error' --
: perhaps it's running too hot?

: You can try running ``scsi -f /dev/rsd0.ctl -e -m 1'', and turn on
: automagic sector reallocation (top couple of lines in the editor).

Unless someone threw a blanket over my case that drive is the coolest drive
I've ever used.  It's well ventilated, even cool to the touch.

Sector reallocation was and _is_ on!  Someone suggested that it might be
my memory that I recently replaced.  I'm going to change that back and
see if it helps.

Thanks,
Chris