Comment 8 for bug 559582

Me too. Upgrade from karmic->lucid on bare metal.

$ sudo do-release-upgrade -d
Checking for a new ubuntu release
Done Upgrade tool signature
Done Upgrade tool
Done downloading
extracting 'lucid.tar.gz'
authenticate 'lucid.tar.gz' against 'lucid.tar.gz.gpg'
tar: Removing leading `/' from member names
tar: /etc/apt/preferences: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors

Reading cache

Checking package manager
Reading package lists: Done
Reading state information: Done
Reading state information: Done
Reading state information: Done
Done downloading
Reading package lists: Done
Reading state information: Done
Reading state information: Done
Reading state information: Done

Updating repository information
WARNING: Failed to read mirror file

No valid mirror found

While scanning your repository information no mirror entry for the
upgrade was found. This can happen if you run a internal mirror or if
the mirror information is out of date.

Do you want to rewrite your 'sources.list' file anyway? If you choose
'Yes' here it will update all 'karmic' to 'lucid' entries.
If you select 'No' the upgrade will cancel.

Continue [yN] y
 WARNING: Failed to read mirror file
Done downloading

Checking package manager
Reading package lists: Donelucid-security/multiverse Packages: 98
Reading state information: Done
Reading state information: Done
Reading state information: Done

Calculating the changes

Calculating the changes

Support for some applications ended

Canonical Ltd. no longer provides support for the following software
packages. You can still get support from the community.

Demoted:
libcompress-bzip2-perl, netcat-traditional

Do you want to start the upgrade?

3 packages are going to be removed. 41 new packages are going to be
installed. 346 packages are going to be upgraded.

Fetching and installing the upgrade can take several hours. Once the
download has finished, the process cannot be cancelled.

 Continue [yN] Details [d]y

Fetching
Done downloading

Upgrading
Done downloading
Exception during pm.DoInstall(): E:Internal Error, Could not perform immediate configuration (2) on mountall

Could not install the upgrades

Error during commit
'E:Internal Error, Could not perform immediate configuration (2) on
mountall'
Restoring original system state

Restoring original system state

Aborting
Reading package lists: Donekarmic-security/multiverse Packages: 98
Reading state information: Done
Reading state information: Done
Reading state information: Done