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Date:      Fri, 20 Jul 2001 01:51:56 +0100
From:      Ian Dowse <iedowse@maths.tcd.ie>
To:        David Wen <rxw44260@hotmail.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: FSCK PROBLEM 
Message-ID:   <200107200151.aa52814@salmon.maths.tcd.ie>
In-Reply-To: Your message of "Thu, 19 Jul 2001 17:23:50 CDT." <OE39WvqzAoa2JB1ndcx0000078c@hotmail.com> 

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In message <OE39WvqzAoa2JB1ndcx0000078c@hotmail.com>, David Wen writes:
>One of my disk was dropped, I used fsck then was able to mounted it =
>back. But when machine was rebooted, it was not mounted. I found out =
>that no matter how many times I do the fsck, there is still a problem. =
>BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST =
>ALTERNATE

My guess would be that the last superblock on the disk got corrupted;
the "FIRST ALTERNATE" that fsck mentions is in fact the superblock
copy nearest the end of the partition.

You might be able to fix this with tunefs using the "-A" option, which
updates all superblocks. Try running

	tunefs -A /dev/da2s1e

and then retry the fsck.

Ian

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