So, users who have been using Ubuntu 10.04 LTS, Ubuntu 11.10 and any of its previous releases can follow the below ways to upgrade to Ubuntu 12.04 LTS Precise Pangolin.
These tutorials will let you upgrade Ubuntu 11.10 to Ubuntu 12.04 LTS Precise Pangolin without much of difficulty. Here are the ways to do it.
Ways To Upgrade To Ubuntu 12.04 LTS Precise Pangolin From Ubuntu 11.10
Method 1 – Use ISO
It is quite obvious that using an ISO image is the easiest way to install or upgrade Ubuntu or any other OS for that matter. All you need to do is run the CD or DVD with Ubuntu 12.04 LTS Precise Pangolin ISO image on it and boot your machine on CD / DVD ROM.
If your machine is not running on any Ubuntu release, then it would prompt you to do the installation from the scratch. But, if you have any Ubuntu release running on your machine, the CD or DVD would detect the version running on your machine, will let you upgrade Ubuntu from there.
All you need is an Ubuntu 12.04 LTS Precise Pangolin ISO image on a CD or DVD and you are good to go ahead with the upgradation.
Click HERE to visit Ubuntu’s Official Website to download its ISO.
Method 2 – Use Update Manager
If you want to grab a cup of coffee while your machine gets upgraded to Ubuntu 12.04 LTS, then using Update Manager is the best option for you.
All you need to do is launch Update Manager, check for updates, and click on the Install button to install the updates.
Once the updates are installed on your machine, click on the Check button again. This will lead you to a window like the below one.
And then click on Upgrade button which would actually use the installed update files to upgrade Ubuntu 11.10 to Ubuntu 12.04. The time required for this upgrade purely depends on the speed of your Internet connection.
Note : If your machine is running on Ubuntu 10.04 LTS, then you have to wait until July to upgrade it to Ubuntu 12.04 LTS.