Upgrade from 10.04 to 12.04

do-release-upgrade -d seems to be working but I thought that 12.04 was properly released.

normally you should get notifications about the LTS release on your system.

Look at the "software sources" of your system. There should under the menu point "actualization" some entries about notifications.

Set them all to the shortest times available. The last entrie there should be something like notify about newer ubuntu versions. This should be set to LTS, when you want to upgrade to 12.04 directly.

Apply this changes and reload your package sources : e.g synaptic relaod or update manager(Software updates).

You should after this get a notification(try a bit arround until the sytem recognize) about a release upgrade from the update-manager(may be called Software updates in 10.04).

Run this.

!Make first a backup of your system!(e.g. dejadub)

The upgrades has become more and more stable in the last years, but the procedure is a complicated one for the software and may under circumstances render your system unbootable.

The whole upgrade may take some hours.

Good luck!

Please close this here as solved, when it is the correct direction for you.

OK, I've found release-upgrade-available in /var/lib/update-notifier. It's an empty file, what should go in there?

You are working completely on console?!

No desktop. Sorry, I have never gone this way, may be some other can guide you through.

I've found the answer.

They recommend not upgrading until 12.04.1 is out which should be soon.

One of my machines already has apticron installed so I'll get a notification when it's ready.

Soon, is relative. It is planned for 2012-07-19 .

https://launchpad.net/ubuntu/+milestone/ubuntu-12.04.1

When running 10.04 Lucid there'll be no prompt until point release arrives in order to asure smooth upgrades.
The point release is August 23rd.
https://wiki.ubuntu.com/PrecisePangolin/ReleaseSchedule