hard drive disappeared with 8.10 upgrade

[Steven Davies-Morris]

Karl Larsen wrote:
> Dave Stevens wrote:
>> Hi,
>> 
>> I have a box with 2 hard drives, a 400G PATA and a 250G SATA. The
>> recent upgrade to 8.10 made a new install on the 250 that works
>> fine but made the 400 disappear. Below is posted the last part of
>> the dmesg file. I take it that the drive needs a filesystem
>> check,is that right?
>> 
>> [  422.197183] attempt to access beyond end of device [
>> 422.197203] sda2: rw=0, want=4, limit=2 [  422.197212] EXT3-fs:
>> unable to read superblock [  542.779742] kjournald starting.
>> Commit interval 5 seconds [  542.779765] EXT3-fs warning:
>> checktime reached, running e2fsck is recommended
>> 
> Yes you have some problems on that Hard drive and you do need to
> run e2fsck. I would start with reading the man page for e2fsck by
> opening a terminal and typing man e2fsck and then read how to use
> this software.
> 
> Karl
> 
> 
> 
>> [  542.780018] EXT3 FS on sda1, internal journal [  542.780028]
>> EXT3-fs: mounted filesystem with ordered data mode. [
>> 723.283816] attempt to access beyond end of device [  723.283840]
>> sda2: rw=0, want=4, limit=2 [  723.283849] EXT3-fs: unable to
>> read superblock [  815.194637] attempt to access beyond end of
>> device [  815.194656] sda2: rw=0, want=4, limit=2 [  815.194664]
>> EXT2-fs: unable to read superblock
>> 
>> 
>> Any and all ideas welcome.
>> 
>> Dave

 From the warning messages it's not just that you need to do a file
system check. There may be something not right with the drive that has
disappeared, or it may be that it's disappearance is creating
"false-positive" drive-problem messages -- which could mean that it's
simply not mounted properly. Either way, the "attempt to access beyond
end of device" and "unable to read superblock" would make me nervous.
First a reboot into recovery mode and run the files system check. Then
a check of the /etc/fstab to see if both drives are being mounted
properly. I know recently when I pulled a 300gb SATA and replaced it
with a 750gb SATA there were boot time warning messages similar to
what your seeing until I corrected my /etc/fstab. If they persist
after both drives are correctly mounted, then you may have a real
hardware issue to deal with.
-- 
Cheers, SDM -- a 21st Century Schizoid Man
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