[ale] How to fix a crashed disk with fsck or debugfs

Malcolm.Silberman at BassHotels.com Malcolm.Silberman at BassHotels.com
Thu Jul 13 09:35:19 EDT 2000


no fdisk /dev/sda does not show the partitioning scheme.... <with tears in
my eyes>

-----Original Message-----
From: Gary Maltzen [mailto:maltzen at MM.COM]
To: ale at ale.org
Sent: Wednesday, July 12, 2000 9:47 PM
To: Malcolm.Silberman at BassHotels.com
Cc: ale at ale.org
Subject: Re: [ale] How to fix a crashed disk with fsck or debugfs


Based on your description so far, you may be SOL.

Question: does 'fdisk /dev/sda' properly show the partitioning scheme?
(I'm wondering if the MBR is intact)

>Here is the problem, had a pwoer failure and fcsk reported errors. It got
>the ide drives up and working but not the scsi. Here are the details;
>
>sda is 8746MB which is a IBM DNES 309170W SCSI (1115cyl 255head 63sec)
>- sda6 is /m01 6087MB
>- sda7 is /home 1655MB
>
>Somehow I lost power and crashed the drives. Tried to run 
>fsck -A -V ; echo == $? == 
>got ==8== which is defined as an OPERATOR ERROR
>
>Then tried fsck -t ext2 -b 8193 /dev/sda6 and got
>'bad magic number in super-block when trying to open /dev/sda6...superblock
>does not describe a correct ext2 filesystem"
>
>Tried superblocks at 16385 and 24577 same message...
>
>Also tried dumbe2fs /dev/sda6 and got the same bad magic number stuff... 
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