System upgrade to latest 20.04
33540
How can I switch a 32-bit installation to a 64-bit one?
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
143331
Can I upgrade the CPU without reinstalling my Xen/Ubuntu system?
109539
How can I perform an offline upgrade using Ubiquity on the installation disc?
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)
142310
Ubuntu 12.04 software upgrade does not show 12.10 upgrade
126659
upgrade from 11.10 to 12.04 - No upgrade option available in update manager
726
Update Manager message "New Hardware Support is Available"
140371
Update Ubuntu 10.04
35093
Upgrading from the command line?
13970
Why am I not getting the Ubuntu 18.04 upgrade?
128471
How do I update from 9.0.10 to 9.1.0?
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
119169
Should I upgrade to 14.04 LTS?
21323
Where can I download the latest release of Ubuntu?
83960
How do I change my update server in Ubuntu 18.04?