Thorny wrote:
On Tue, 07 Apr 2009 15:29:16 -0700, tony mollica posted:
Hello.
Need a little help with a disk drive.
Until today, my external storage drive was working fine using Debian 4.0
(latest updates)
and ext2 file system. It's a 180Gig drive divided into 3 partitions, 1
primary and 2 logical,
sdg1, sdg5 and sdg6, for example.
I did two things, after which the drive acts unusual. It powers up but
takes a few minutes,
then automounts only the third partition(sdg6). I can mount the second
partition
manually(sdg5), but the first, and only, primary partiton(sdg1) isn't
found.
cfdisk shows all partitions normally. I can e2fsck 5 and 6, but not 1.
dmesg shows a read error in the sector that partition 1 begins. Can't
access sdg1 at all, tried several different disk programs to access the
partition.
Back to the two things. I tried to change the disk label, unsuccessfully,
and there
was a call to check the partition, so I unmounted it and e2fsck'd it. Now
I can only
get to 2 of the 3 partitions. Everything seems to be there, but it won't
recognize
the first and only primary partition. All the sector numbers seem to
match using
gpart, lde, cfdisk and fdisk.
Looking for suggestions to find the error in the first partition.
Just to clear up a misconception, you have to have a primary
partition to hold the logical partitions. So, make sure we are talking
about things correctly. With fdisk do you see both primaries with one
being shown as extended (and containing the logical partitions)?
With the partition you are having trouble with unmounted, do you get an
error message when you try to fsck it?
Yes, the necessary partitions are there. fdisk, cfdisk and testdisk all
show
the right stuff. Partition 1 is the problem, the other 2 I can mount
normally.
If I fsck part1 I get the message that no sdg1 exists (the drive is an
external
USB that used to have sdg1, sdg5 and sdg6). Testdisk even finds all the
files. I thinking that there is some sort of hardware read error that's
keeping
the OS from recognizing the partition for mounting. I'm running some tests
on the drive but I'll post that short error message from fsck shortly.
thanks,
-----------------
tony
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