Get "do-release-upgrade" command not found ![]() Get failure where is says you cannot upgrade from "cosmic" to "eoan" (see below)Ĭ. Then via command line do: $ do-release-upgradeī. Now you can try upgrade, but first check that: /etc/update-manager/release-upgrades has "Prompt=normal" and edit if needed. 18.10 and 19.04 are the problem as they are "obsolete" and archive has been moved to "old-releases", so you will need to edit /etc/apt/sources.list to point to:Ĥ.This process was defined as a result of having a number of VMs that got stranded at release 18.10 and "do-release-upgrade" command no longer working due to 18.10 (Cosmic) & 19.04 (Disco) having gone "End of Life". ![]() The follow note provide process used to get from 18.10 (Cosmic - End of Life) to 20.04 (Focal LTS). The impact of this is that it is quite easy to get stranded on on "Normal" release cycle as the intermediate releases get moved to "End of Life" quite quickly. ![]() Ubuntu upgrade tools supports "single step" upgrades. Status: June 2020 - Validated across a number of upgrades which got stranded on 18.10
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