20.10 do-release-upgrade not finding 21.04
63176
How can I update to Ubuntu 21.04?
20399
How do I upgrade from 14.04 LTS to 16.04.1 LTS?
118307
Why does upgrade from 12.04 to 12.10 using a CD/DVD still require download?
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
155154
I am currently using 19.04 and I got "No new release found for 19.10"
87236
How to upgrade Ubuntu 12.04 to 13.10?
60659
Install newer package version from trusty-backports
16837
Unable to upgrade from 14.04 to 14.10 "Cannot Calculate Upgrades"
154072
Ubuntu 17.10 doesn't show up in update-manager
12578
How do I upgrade to a newer version of Ubuntu?
126659
upgrade from 11.10 to 12.04 - No upgrade option available in update manager
43648
Why isn't an upgrade to 20.04 from 18.04 available yet?
128471
How do I update from 9.0.10 to 9.1.0?
113056
How to upgrade from 12.04 to 12.10 using CD?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
2670
Why is "No new release found" when upgrading from a LTS to the next?
43917
What is the difference between apt-get update and upgrade?