Upgrading from Ubuntu 10.4 to 10.10

If you are wondering why the Ubuntu 10.04 Update Manager does not show the button to upgrade to 10.10 release, then do the following.

Open the /etc/update-manager/release-upgrades file and set Prompt=normal (you will need super user privileges – sudo). By default, this is set to lts, which will only prompt when a LTS upgrade is available.

Once you have done that, go back to the Update Manager, and click Check button. Now the Upgrade to 10.10 button will appear !


    1. Well, for me, it worked out once I changed that from “lts” to “normal”, and then retry using Update Manager -> Check.

      As I remember, I closed Update Manager before doing the change, and re-executed it afterwards. Is this the way you tried it ? May be a restart might do the trick.

  1. Thanks for the tip. Following your suggestion I found the GUI version equivalent:
    Update Manager-> Settings -> Release upgrade
    Set it to “normal releases” instead of “long term support releses only”. These are what normal and lts stand for. Thanks. Bye

  2. I went to /etc/update-manager/release-upgrades file and tried to set Prompt=normal. But that file does not seem to be editable. I could not edit. So I could not set prompt=normal.

    1. You need to have super user privileges to modify this file. You could use su command in shell, or use the GUI alternative given by youngdurtie in comments.

      go to update manager, then left bottom, settings, then update tab, at the bottom make sure it says normal releases and not long term releases

    2. You were not editing as super user
      Type sudo gedit /path/to/file
      enter your password when prompted and th file will open in gedit. Remove th lts and replace it with normal
      Works a treat on our machines

    1. Hi Suresh,

      Open up a terminal (Applications -> Accessories -> Terminal) and enter the following command.

      gksu gedit /etc/update-manager/release-upgrades

      This will request you to enter your password, and then you will get the GEdit Text Editor with the releases configuration file open. In that file, the last line will be Prompt=lts in your case. Change that to Prompt=normal and save.

      Now when you open up update manager (System -> Administration -> Update Manager) you should see that there is a button on the top which says that a new release is available (10.10). Just click on that button to upgrade.

      Hope this helps.

      Good Luck !

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