Ubuntu
ubuntu-release-upgrader package

  1. Bug #1982791
  2. Comment #3

Comment 3 for bug 1982791

Revision history for this message
Brian Murray (brian-murray) wrote : Re: Can not upgrade from Impish anymore, Release files have gone. Upgrading all packages to latest also not working anymore. This is now a broken installation.

Please switch your /etc/apt/sources.list file to use "http://old-releases.ubuntu.com" instead of "http://archive.ubuntu.com". After doing that you'll be able to run 'apt update' and 'apt dist-upgrade' to install all available updates for your release. Finally, you'll be able to run the distribution upgrade to Ubuntu 22.04 LTS.