Upgrade Ubuntu 12.04 Precise To Ubuntu 12.10 Quantal (Any Ubuntu Version)

Howto Upgrade Ubuntu 12.04 Precise Pangolin To Ubuntu 12.10 Quantal Quetzal

Graphical Upgrade:
This is the most easiest way to upgrade Ubuntu from any version to any latest Ubuntu Version. You can upgrade with just few clicks and rest of the process Ubuntu will do.

Step 1:
Open "Dash" and Search for "Update Manager" then open it. In update manager Click on "Settings" Button.

Step 2:
A new window will open, Go to "Updates" Tab at the end of this window "Notify me of a new Ubuntu Version" Select "For any new Version" and click ok, then close the update manager.

Step 3:
Now start "Update Manager" again and Click on "Upgrade" Button. That's it

Command Line Upgrade:
Command line upgrade is a bit challenge for normal user, because upgrade from Lts to normal release. but everybody can do it now.

Upgrade to Normal Release from LTS:
If you are on LTS version probably you can't upgrade to latest normal release, To do this you need to edit release text file. So lets start.
Enter following command in terminal to install Core Update-Manager:

Terminal Command:
sudo apt-get install update-manager-core

Now enter following to open release file in text editor:

Terminal Command:
sudo gedit /etc/update-manager/release-upgrades

Now change lts to normal in opened text file

Prompt=normal

Now enter following commands in terminal to upgrade:

Terminal Commands:
sudo apt-get update
sudo do-release-upgrade -d

or use this command to upgrade

Terminal Command:
sudo apt-get dist-upgrade -d

Upgrade to LTS Release from Normal:
If you are on normal version of Ubuntu and you want to upgrade to LTS version simple follow the guide.
Enter following command in terminal to install Core Update-Manager:

Terminal Command:
sudo apt-get install update-manager-core

Now enter following to open release file in text editor:

Terminal Command:
sudo gedit /etc/update-manager/release-upgrades

Now change normal to lts in opened text file

Prompt=lts

Now enter following commands in terminal to upgrade:

Terminal Commands:
sudo apt-get update
sudo do-release-upgrade -d

or use this command to upgrade

Terminal Command:
sudo apt-get dist-upgrade -d

That's it