can i change ubuntu 19.10 to 18.04.4 LTS?
2136
How to roll back Ubuntu to a previous version?
98615
Is it possible to switch Ubuntu back to base-2?
132739
Will Ubuntu 18.04 LTS still support Upstart or do we have to change to systemd?
69200
How do I reinstall Ubuntu Software in Ubuntu 20.04 LTS version?
67365
How to install another Ubuntu alongside different version of Ubuntu?
29191
Upgrade to 18.04 from 17.10
25678
How to do a minimal install of 20.04?
119169
Should I upgrade to 14.04 LTS?
24165
Upgrade to version newer than repositories
147789
Updating core from 8.4.4 to 8.6.1
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
76117
Can my xubuntu installation be converted to standard Ubuntu?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
35146
Will apt-get dist-upgrade upgrade my system to newer version?
127766
how to upgrade my Debian package with minor changes
2670
Why is "No new release found" when upgrading from a LTS to the next?
7580
How to safely upgrade from an older Ubuntu version to a newer one?