I am fan of Linux basically Fedora and Ubuntu. Ubuntu community has done a very good job for upgrading Ubuntu. If you want to upgrading your Ubuntu 9.10 to 10.04, you can do it in few steps.
Open a terminal and follow the following steps:
1. sudo apt-get update
2. sudo apt-get install update-manager-core
3. check : /etc/update-manager/release-upgrades and see if Prompt=normal is there. If not edit the file and set Prompt=normal
4. sudo do-release-upgrade
PS: you should have good internet connection to upgrade your system using above steps.
For upgrading from ubuntu cd : read here
Open a terminal and follow the following steps:
1. sudo apt-get update
2. sudo apt-get install update-manager-core
3. check : /etc/update-manager/release-upgrades and see if Prompt=normal is there. If not edit the file and set Prompt=normal
4. sudo do-release-upgrade
PS: you should have good internet connection to upgrade your system using above steps.
For upgrading from ubuntu cd : read here
