Now I want to share with you all how to upgrade Ubuntu 8.10 to Ubuntu 9.04 without reinstalling Ubuntu.
For Ubuntu desktop edition:
1. Press ALT+F2.
2. Type update-manager -d.
3. Update Manager should open up and tell you: New distribution release ‘9.04’ is available.
4. Click Upgrade and follow the on-screen instructions.
5. Wait until the process finishes.
6. That’s it!
For Ubuntu server edition:
1. Install the update-manager-core package if it is not already installed.
2. Type: vim /etc/update-manager/release-upgrades.
3. Set Prompt=normal and save the file.
4. Type this command:
sudo do-release-upgrade5. Follow the on-screen instructions.
6. That’s it!