Re: [SLUG] Damaged Partition Recovery

Very good write up of how to fix the problem.  Possible pearl?

>
>> This isn't part of linux question but I don't know
>> where to ask hopefully you want to answer my
>> question.
>
>> I have a box that accidentally I have damaged the
>> partition. Is there any slugger know about recover
>> the old partition since I haven't create anything
>> since then.
>
> I'm assuming you mean that you've zonged the partition
> table accidentally. Don't panic.
>
> You can get everything back; you basically go into
> the fdisk program and set one partition from block
> 1 to the end. You then save that partition table and
> exit fdisk. You then exit and mount that partition.
> Then take careful note of the actual size of the
> partition as reported by fsck. Then go back into fdisk
> and set the partition size to what it should actually
> be and make a new partition just above that that
> stretches out to the end of the disk. Save that
> partition table and exit fdisk and remount the second
> one. Repeat this process until you've got all your
> partitions back. Figure out which partition is which;
> find out which is /, which is /var, which is swap
> etc because you'll have to re-set that up. If you
> can find the old /etc/fstab that should give you
> the mapping of partitions onto Linux filesystems
> although probably won't help with the sizes of the
> partitions themselves.
>
> By the time you've finished you will know a hell of
> a lot about fdisk, fsck and bytes, kilobytes and
> megabytes.
>
> For a more thorough writeup of the procedure visit
> http://www.tldp.org/HOWTO/Partition/recovering.html
>
> This procedure works; I've done it myself took me
> the best part of a day but boy did I feel like a god
> when it got fixed. I also had cool looking pages of
> scribbled notepaper full of calculations with numbers
> like 479199232 and stuff. One thing I did which proved
> very helpful was write down how many bytes an fdisk
> cylinder gave me.
>
> In my situation the partition table had been zonged
> by a parallel install of a later version of Redhat on
> a different disk and a misunderstanding by the
> installer caused the install program to write to the
> partition table of both disks.
>
> Have a lot of fun,
> Stuart.
>
>
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Tony Green <[email protected]>


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SLUG Pearls
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