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How do I upgrade to the development release (aka. Ubuntu+1)?

I am currently running Ubuntu 12.04 LTS but I am wondering how can you update from 12.04 to 12.10? Do you need to download the cd or you can simply update it from the update manager? Thanks in advance!

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    I'd wait until it is officially released and then use the update manager.
    – nanofarad
    Oct 6, 2012 at 13:59
  • In addition, usually you don't really need to upgrade. If stability matters it is often a better idea to stay for a while with the current release.
    – Takkat
    Oct 6, 2012 at 15:49

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Upgrading from Ubuntu 12.04 LTS

To upgrade from Ubuntu 12.04 LTS on a desktop system:

Open Software Sources.

Switch to the Updates tab and set Notify me of a new Ubuntu version to For any new version. Press Alt+F2 and type in update-manager -d (without the quotes) into the command box. Update Manager should open up and tell you: New distribution release '12.10' is available. Click Upgrade and follow the on-screen instructions.

To upgrade from Ubuntu 12.04 LTS on a server system:

Ensure that /etc/update-manager/release-upgrades includes Prompt=Normal.

Install the update-manager-core package if it is not already installed.

Launch the upgrade tool with the command sudo do-release-upgrade -d. Follow the on-screen instructions.

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