How to upgrade from Ubuntu 8.04 LTS, Hardy Heron, to Ubuntu 10.04 LTS, Lucid Lynx

Ubuntu 8.04, was the last LTS release and Ubuntu provides you with the facility to upgrade from LTS to LTS. So, we can skip all the releases between them and directly upgrade to Ubuntu 10.04, Lucid Lynx. Lets start with the Desktop edition.

Upgrade Ubuntu 8.04 LTS, Hardy Heron, Desktop edition to Ubuntu 10.04 LTS, Lucid Lynx

Press Alt-F2 and type

update-manager  --devel-release

Since, I don't have a Hardy currently installed, I won't be able to provide a screenshot. Now, click check to check for new updates. If you haven't installed all the updates, then first install them and then again click check. Now, you will see a message notifying you of the availablility of a new release. In case you feel the need for screenshots you can see them in another howto about upgrading from 9.10 to 10.04 LTS.

Please note that, this method won't work for Kubuntu 8.04, because it wasn't a LTS release and has reached his EOL.

Now, press upgrade and follow the instructions. You can even refer to the steps given in the link above.

Upgrade Ubuntu 8.04 LTS, Hardy Heron, Server edition to Ubuntu 10.04 LTS, Lucid Lynx

For server installations, we will first need to install the package update-manager-core, if its not already installed. Run the following command to install it

[shredder12-server]$ sudo apt-get install update-manager-core

Now, we need to open and edit the file /etc/update-manager/release-upgrades and set Prompt=lts.

[shredder12-server]$ sudo vim /etc/update-manager/release-upgrades

and change Prompt=lts, if its not already that.

Now, run the following command,

[shredder-server]$ sudo do-release-upgrade --devel-release

and follow the onscreen instructions to upgrade.