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Date:      Sat, 1 Apr 2000 10:41:44 +0200
From:      "James A Wilde" <james.wilde@telia.com>
To:        "FreeBSD-questions" <freebsd-questions@freebsd.org>
Subject:   Bad block problem
Message-ID:  <000301bf9bb6$1c029e30$8208a8c0@iqunlimited.net>

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I have just discovered that my FBSD machine at home (3.1) has stopped
working.  When I reboot it takes me to single user mode and complains that
there are problems on the hard disk.  Running fsck on /dev/wd0s1a (/)
results in the following message:

wd0s1a: hard error reading fsbn 1496 of 1408-1519 (wd0s1 bn 1496; cn 0 tn 23
sn 47 status 59<rdy,seekdone,drq,err> error 40<uncorr>)

CANNOT READ: BLK 1408

Okay, I get the message, but, is there any way I can mark the block as bad
so that fsck leaves it alone and get fsck to recheck the / partition as
good?  I assume I must then find which file is corrupted as a result of not
having block 1496 and replace the file.

I hope it doesn't come to a reformat of the disk and reinstall.  If so, is
there any way I can save some of the stuff on there.  I have ssh, ssh2,
bind, samba, etc and I'd rather not have to d/l it all again.  I have no
backup unit on this machine.  I do have a couple of Windows NT machines on
the network.  Is it, for example, possible to reinstall in such a way that
the tar files on /usr are left intact?  Or is there another way I can save
these tar files on my network?  I have another FBSD machine on a nearby LAN
but I don't know if I can get to it in single user mode.

I can clean and mount all partitions except root.

Grateful for suggestions.

mvh/regards

James



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