- Start Synaptic Package Manager.
- Go to Settings / Repositories.
- Change Distribution from hoary to breezy for every Ubuntu repository (example).
- Close the Repositories window; the package information will be automatically reloaded.
- Press Mark All Upgrades button and choose Smart Update.
Upgrading Ubuntu 5.04 to 5.10 (in, increasingly inaccurately named, 3 easy steps)
All you have to do to upgrade Ubuntu 5.04 (Hoary Hedgehog) to 5.10 (Breezy Badger) is: