Ubuntu – update directly from Ubuntu 9.10 to 10.10

10.109.10upgrade

I was using Ubuntu 9.10 version and today I want to upgrade to 10.10.

I updated my ubuntu 9.10 with this commands: 

sudo aptitude install ubuntu-desktop 
sudo aptitude update && sudo aptitude safe-upgrade 
update-manager -d

But when I opened update manager I couldn't see button for upgrading to 10.10 (or 10.04) will be available.

How can I upgrade now?

Best Answer

No, upgrade is only possible to the immediately following release except in the case of a LTS release, when direct upgrade from one LTS to the following is allowed. You have to first upgrade to 10.04 and then to 10.10.

The command update-manager -d is used for upgrading to a development version. Since both 10.04 and 10.10 have been released to public, you cannot upgrade to either of them using that command.

Your update-manager must be showing the button for upgrading to 10.04 when you start it normally(ie without the "-d" option). If you don't want to reinstall then use that button to upgrade to 10.04 version first and then upgrade to maverick in the same way.

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