Upgrade ubuntu to newer version

(1) To update ubuntu 8.04 to 8.10

Follow the steps in this link

http://www.howtoforge.com/how-to-upgrade-ubuntu-8.04-to-ubuntu-8.10-desktop-and-server

(2) To update ubuntu 8.10 to 9.04


Follow the steps in this link



http://www.howtoforge.com/how-to-upgrade-ubuntu-8.10-to-ubuntu-9.04-desktop-and-server

(3) To update ubuntu 9.04 to 9.10

NOTE:You can only directly upgrade to Ubuntu 9.10 from Ubuntu 9.04

Follow the steps in this link  

http://www.ubuntu.com/getubuntu/upgrading


Ubuntu Version Names

1)8.04----->Hardy Heron

2)8.10----->Intrepid

3)9.04----->Jaunty Jackalope

4)9.10----->Karmic Koala