View Full Version : [ubuntu] Ubuntu 12.04 LTC upgrade summary

April 29th, 2012, 06:55 PM
My server at home runs Ubuntu 10.04 LTS. Learning that Ubuntu 12.04 LTS has been released, I tried to upgrade using the 'do-release-upgrade' command, over an ssh connection, but whatever I tried, the steadfast response was 'No new release found'. Puzzling! So I started to search the forum. Because I noticed, many others are puzzled, let me summarise what I have found.

NOTE: this is about upgrading a server without a GUI -- so no Upgrade Manager, no Unity, no GNOME, just the goold old shell!

1. First of all: it is yet too early to upgrade a server to Ubuntu 12.04 LTS. The current release, although official, is still treated as a development version. If you really want, you can upgrade using the command 'sudo do-release-upgrade -d', but that is NOT advised. See Precise Pangolin Release Notes (https://wiki.ubuntu.com/PrecisePangolin/ReleaseNotes/UbuntuDesktop) for more information. Once the first point release will be out in July, i.e. version 12.04.1, the recommended procedure will work (see 4. below.)

2. Once that marvelous day has come when you can actually upgrade to 12.04 LTS, first make sure you have your Ubuntu 10.04 LTS distro updated to the max:

$ sudo apt-get update
$ sudo apt-get upgrade
That will effectively take your version to level 10.04.4.

3. Needless to say -- one would assume, but reality proves the need for repetition -- you need to make a backup of any files you might regret to lose if something goes wrong (documents, pictures, spreadsheets, config files, etc.). Of course, on your machine nothing ever goes wrong, but why not be better safe than sorry?

4. Then run the magic command...

$ sudo do-release-upgrade
...and follow the instructions. See Documentation (https://help.ubuntu.com/12.04/serverguide/installing-upgrading.html) for details.

5. In case you would not have a working internet connection, you could upgrade using the Alternate CD/DVD, either from disk or by mounting the ISO image. Of course you would need to download the 12.04.1 version of Ubuntu LTS. More information can be found here (https://help.ubuntu.com/community/PreciseUpgrades).

Well, happy updating in July!