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How do I upgrade to the unreleased version of Ubuntu for testing?

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4 Answers

up vote 42 down vote accepted

Press Alt + F2 and type update-manager -d. On the top of the window you will see an info of the new Ubuntu+1 "release".

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However, upgrading to a development release is not recommended, as it is a unstable release.

See this question for tips when you have problems: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do?

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This won't work if you don't have the software-sources correctly configured. –  Lucio Aug 9 '13 at 5:00
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From 11.04 onwards,when you boot the livecd and start installing it will give a option of upgrading to 11.04. it will automatically detect installed apps and install the updated version of your apps also.

live CD : Allocate drive space

Source

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There are two ways to upgrade:

  • Upgrade using update-manager
  • Upgrade using alternate cd

However note it is not recommended to upgrade it to Ubuntu+1, since it is not stable.

Upgrade using update-manager:

Press Alt+F2 and then type update-manager -d. When update manager appears then click on upgrade.

alt text

Upgrade using alternate cd:

You can also upgrade using the alternate cd. After downloading the latest build then press Alt+F2 and enter gksu /cdrom/cdromupgrade.

Because it is a development release, you will almost certainly have problems. See: There's an issue with an Alpha Release of Ubuntu, what should I do?

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THank you @dv3500ea for editing :) –  karthick87 Jan 15 '11 at 14:48
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The truly command line way is (e.g. if you don't have a gui):

sudo do-release-upgrade -d

where -d means update to a development version (like 11.04 - natty)

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This works for me (Kubuntu) while update-manager does not (not present). –  sje397 May 2 '11 at 0:00
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