How To Upgrade Ubuntu 10.04 [Lucid Lynx] To 10.10 [Maverick Meerkat]

[cheeseburger]

Start the Update Manager (System > Administration > Update Manager):



In the Update Manager, click on the Settings... button (in the lower left corner):



The Updates tab in the Software Sources window should open.
Select Normal releases in the Show new distribution releases: drop-down menu and click on Close:



Back in the Update Manager,
click on the Check button to check for new updates and distribution releases:



The Update Manager should show that a new distribution release (10.10) is available.
Click on the Upgrade button to start the distribution upgrade:



A window with the release notes for 10.10 comes up. Click on Upgrade again:



The upgrade tool is now being downloaded.
Afterwards, type in your password. The upgrade is being prepared:



Click on Start Upgrade to finally begin with the upgrade process:



The upgrade packages are now being downloaded...



... and installed. This can take some time, so please be patient.

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You might see the following message (Continue without installing GRUB?). I recommend to check the checkbox and click on Forward so that the system will continue to use the old, working GRUB. If you don't check the checkbox , the update manager will install a new GRUB and ask you on which device/partition it should be installed which can make the system unbootable if you select the wrong device/partition.



Because we had to change the Release upgrade settings in the Software Sources window,
you will see the following message. It is ok to select Keep:



At the end of the upgrade process, you should remove obsolete packages:





The system needs to be rebooted to complete the upgrade, therefore click on Restart Now:



After the reboot, you can use your new Ubuntu 10.10 desktop:



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