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Date:      Tue, 31 Oct 1995 12:02:10 -0700 (MST)
From:      Ade Barkah <mbarkah@hemi.com>
To:        freebsd-questions@freebsd.org
Subject:   Help with scsi MEDIUM ERROR...
Message-ID:  <199510311902.MAA09025@hemi.com>

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Hello,

We recently encountered the following message on one of our systems:

sd1(aha0:1:0): MEDIUM ERROR info:f9370 asc12,0 Address mark not found 
for id field field replaceable unit: d8 sks:80,0 
, FAILURE (there were also a few retry messages before the FAILURE.)

The environment is FreeBSD 2.0.5-950622-SNAP, the disk in question
is a 2gb Seagate Barracuda connected to an Adaptec 1542-CF.

My questions are... what kind of conditions might cause the error
message ? Now that it has happened, what type of further failures
can I expect, and what precautions should I take ?

The machine is still up and running... should I fsck partitions
on the disk to make sure everything is ok ?

Thanks in advance,

-Ade Barkah
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