I tried to upgrade from 11.04 to 11.10 so that I can get to 12.10-14.04
1520
How to install software or upgrade from an old unsupported release?
118978
Not all updates can be installed: partial upgrade
16837
Unable to upgrade from 14.04 to 14.10 "Cannot Calculate Upgrades"
87236
How to upgrade Ubuntu 12.04 to 13.10?
157289
Why use apt-get upgrade instead of apt-get dist-upgrade?
36529
How to revert an update?
129223
Ubuntu upgrade from 17.04 to 18.04
29500
Can I undo the upgrade to iOS 7 by restoring to iOS 6.1.3?
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
63176
How can I update to Ubuntu 21.04?
54223
On 14.04, my kernel version is 3.11.0-18?
23096
How to remove obsolete packages after failed release upgrade via do-release-upgrade on Ubuntu?
105335
How do I upgrade my Ubuntu server from one LTS version to another? Is this safe?
13399
Why can I no longer (un)install packages via apt-get after doing a partial dist-upgrade?
35146
Will apt-get dist-upgrade upgrade my system to newer version?
113056
How to upgrade from 12.04 to 12.10 using CD?
2136
How to roll back Ubuntu to a previous version?