On Fri, 9 Dec 2005, Levi Bard wrote:
> My secondary HD went out the other day. It started giving me I/O
> errors, so I tried to fsck it, and it wouldn't even run because of the
> errors. [c]fdisk won't even read the partition table.
> Next, I tried rebooting with the force-check flag, and basically the
> same thing happened - the errors were so bad that it killed makedev in
> the middle of creating the nodes in /dev, causing a host of other
> problems like not being able to ssh in or run X. I fixed these by
> yanking the drive entirely.
>
> The drive in question is a 120G Samsung. The data on it is not vital
> (read, there are no backups), but it would be nice to be able to
> recover it if possible. How should I begin to go about this?
What I did when a drive died was:
Copy each partition into a file with something like
dd if=/dev/hdxn bs=512 conv=noerror | gzip -9 > hdxn.img.gz
Uncompress _a copy_ of one partition at a time:
gzip -d < hdxn.img.gz > hdxn.img
(I didn't have room for the whole thing. If you do, skip the
compression/decompression.)
Attach it to a loopback device:
losetup /dev/loopm hdxn.img
fsck it:
fsck /dev/loopm
Repeat the fsck until it gets no errors.
(Or skip the fsck and work on it in some other way.)
Mount it:
mount /dev/loopm /mnt/wherever -o ro
You'll have to get a new drive anyhow, so you might as well use that for
scratch space.
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