How to Upgrade an Ubuntu Release

Step-by-Step Guide

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   Step 1: If you are a beginner

   List file in /etc/apt.
   
   Open a terminal and run vi /etc/apt/sources.list. (Here, vi is the text editor.
   
   You can replace it with gedit, nano or a text editor of your choice).
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   Step 2: you must check your sources.

   Now, change every 'warty' to 'hoary'.
   
   There should be 6 of them.
   
   Don't edit anything at the first line: deb cdrom.
   
   Save your changes and let's go to the next step. , You will be prompted for your root password (enter it). , Again, enter your password and wait 2-3 seconds.
   
   You will see a list of packages which should be installed to upgrade from Ubuntu
   4.10 to Ubuntu
   5.04. , If you don't want to upgrade then type 'n' and press enter to abort. , Bear in mind that this is a very large download, and will take a considerable time.
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   Step 3: Remove all the `#` symbols in front of the word `deb` followed by a link.

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   Step 4: Whilst still in the terminal window

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   Step 5: run sudo apt-get update.

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   Step 6: After apt-get is done

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   Step 7: run sudo apt-get dist-upgrade.

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   Step 8: You will be asked if you want to upgrade those packages

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   Step 9: if yes

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    Step 10: type 'Y' and hit enter.

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    Step 11: Apt-get will now download and install all of these packages.

Detailed Guide

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