Updating 16.04 to 19.04
1520
How to install software or upgrade from an old unsupported release?
37112
Upgrade from httpd 2.4.6 to 2.4.41
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
32829
One single command to update everything in Ubuntu?
119920
Failed upgrade from Ubuntu 19.10 to 20.04 "Please update the microcode"
93942
How to fix "Failed to download repository information" error while updating?
140371
Update Ubuntu 10.04
120161
Ubuntu 19.04 problems install upgrades
421
How do I update a Drupal distribution to a newer version?
20399
How do I upgrade from 14.04 LTS to 16.04.1 LTS?
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
60659
Install newer package version from trusty-backports
140850
Why does do-release-upgrade on Xubuntu running version 18.04 not offer to update to 20.04.1?
36703
How do I upgrade from 12.10 to 13.04?
74185
How can I add a PPA from a previous release?
13970
Why am I not getting the Ubuntu 18.04 upgrade?
66915
How to request a package upgrade in the next Ubuntu release