Comment 8 for bug 8322

Revision history for this message
Sebastian Breier (tomcat42) wrote :

Sorry to say that, but it was a failure.

1. I made the backups

2. I deleted the old Ubuntu partitions

3. I reinstalled Ubuntu using the original warty installer CD

4. I checked the disk with PMagic => Bad partition table

So far so good.

The problem this time was that I couldn't fix the partition table the way I did
in my first posting, which means changing between LBA/non-LBA mode in BIOS and
making PMagic fix the CHS/LBA and partition size problems didn't help. The
partition stayed broken.

5. Deleted the ext3/swap partitions using Ubuntu's fdisk.

6. Checked the disk with PMagic => No errors. Only my two NTFS partitions and
the free space where Ubuntu was. Somehow, fdisk seems not to be affected by this
bug. Maybe it gets its geometry values elsewhere.

I can't say for sure that the partition table is alright after deleting Linux
with fdisk. So far my data seems alright and no program I use had problems with
the disk. We will see within the next week if fdisk is really capable of fixing
it (by destroying the Ubuntu installation though).

7. Installed Ubuntu onto the free space using the warty-i386-new-parted.iso.

8. Checked the disk with PMagic => Absolutely same problem as with the original
warty installer CD.

Sorry guys... this hasn't worked out.

If this information means anything, PMagic spit out this message the first time
today:

   Disk 3 (114439 MB 14589c 255h 63s) appears to have partitions created using a
different drive geometry (16h 63s).
   This serious problem can lead to data loss.
   No partition manipulations should be made to this disk using this product or
the operating system's products.
   You should back up the data on this disk, delete all partitions, create new
partitions under the new drive geometry, and then restore your data using the
backup.

I will still be available for further tests, but be aware that
1. I got a test in about 1 week, so I won't test within that time.
2. making the backups and reinstalling all the things took me about 5 hours
today (have to take out the disk to make the backups in my Dad's PC with enough
free space etc), so if you have further tests, try to enable some log files or
something so we get more data than my reports.

== SHORT CONCLUSION ==
- The proposed fix doesn't work and the problem persists.
- Using Linux fdisk to delete the partitions created by parted (Ubuntu's
ext3/swap) most probably fixes the partition table.