Upgrading from 12.04 LTS to 13.04
87236
How to upgrade Ubuntu 12.04 to 13.10?
2136
How to roll back Ubuntu to a previous version?
114305
On really old Ubuntu 6.06 - How to upgrade
105335
How do I upgrade my Ubuntu server from one LTS version to another? Is this safe?
90512
Upgrading from 12.10 WUBI install to 13.04
23302
How do I install/upgrade r-base to the latest version?
49889
Will there be data loss if I upgrade?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
41825
How to downgrade from 64-bit to 32-bit
49161
Upgrade manager wants me to do a partial upgrade
113056
How to upgrade from 12.04 to 12.10 using CD?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
53938
Can I upgrade from Windows 7 32-bit to Windows 7 64 bit without reinstalling all of my software?
60606
Upgrading to Ubuntu 13.04 with live USB on dual boot system
7357
upgrade to 13.10 stalled and restart failed
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
140371
Update Ubuntu 10.04