Replacing (not upgrading) Ubuntu 12.04.5 with 14.04
25919
How to replace an old version of Ubuntu with a newer one from USB/DVD?
98956
Reasons why not to update an Ubuntu version to a newer/older kernel version
89532
How to Duplicate a Ubuntu System for Distribution?
63514
How do I decide what version of Ubuntu to install?
63176
How can I update to Ubuntu 21.04?
119169
Should I upgrade to 14.04 LTS?
147789
Updating core from 8.4.4 to 8.6.1
23096
How to remove obsolete packages after failed release upgrade via do-release-upgrade on Ubuntu?
9738
How can I replace Windows with Ubuntu?
111573
What's the best way to re-enable PPAs/repos after an upgrade?
55211
Problem when upgrading to Ubuntu 14.04 from Ubuntu 12.04
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
105335
How do I upgrade my Ubuntu server from one LTS version to another? Is this safe?
36703
How do I upgrade from 12.10 to 13.04?
121201
Why can't I update applications without upgrading the whole OS?
76117
Can my xubuntu installation be converted to standard Ubuntu?
56225
Do I have to download both the 14.04 and the 14.04.1 versions of ubuntu?