How to Upgrade to Ubuntu 14.04 Trusty Tahr from Ubuntu 13.10 Saucy/any Ubuntu version


Warning: Backup your data.

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: Disable all Third-Party repositories from "Other Software" Tab.

Step 3: 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 4: 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 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:

Now enter following to open release file in text editor:

Now change normal to lts in opened text file
Prompt=lts
Now enter following commands in terminal to upgrade:

or use this command to upgrade

Upgrade to Normal Release from LTS (Long Term Support):
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:

Now enter following to open release file in text editor:

Now change lts to normal in opened text file
Prompt=normal
Now enter following commands in terminal to upgrade:

or use this command to upgrade
That's it
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