What ways can I upgrade from 17.04 (Zesty) to 18.04 (Bionic)?
211
Can I skip over releases when upgrading?
109539
How can I perform an offline upgrade using Ubiquity on the installation disc?
4660
Should I be offered the option to upgrade to 18.04.1?
24165
Upgrade to version newer than repositories
69705
Is there a way to install Unity 7 in 17.10?
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
101714
Is there any way to roll back the most recent upgrade?
87236
How to upgrade Ubuntu 12.04 to 13.10?
50810
No upgrade available for 19.04 from 18.10
144172
How to upgrade to a point release from the same base release (12.04 to 12.04.03)
130579
how to upgrade a single package in debian
58979
How can I upgrade Ubuntu LTS to the next one offline?
58888
Change Ubuntu 17.04 to Ubuntu 16.04.2 LTS
35093
Upgrading from the command line?
83960
How do I change my update server in Ubuntu 18.04?
26402
How to install the latest stable version of Chromium?
16428
Upgrade to the latest PHP version in ubuntu 16.04