On Wed, 08 Apr 2009 07:38:26 -0700, tony mollica posted: > 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. > Tony, I think you missed my point. In order for there to be three usable partitions on your system there has to be a physical partition to hold logical partitions 5 and 6, you must have two primary partitions.
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