I tried originally to upgrade Redhat 6.0 using files in the
root partition to upgrade the same partition. It failed
with a couldn't find RPM database error on the main screen.
I rebooted and tried rpm --rebuild after upgrading to the
Redhat 6.0 version of rpm. This did not help. Then I
noticed on the other screen the error regarding a mount on
/tmp/hdimage. So I copied all the files to another
partition and got much further (till the problem I worked
around in bugid 2506. Has anyone been able to use the same
partition to upgrade itself?
I only have a single root partition, no other partitions.
Another note: bugid 2142 seems to mention this problem in
the last comment but I think their other primary issue was
resolved and so it was closed.
*** This bug has been marked as a duplicate of 2504 ***