How can I safely downgrade from 18.04 to 16.04
2136
How to roll back Ubuntu to a previous version?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
56282
16.04 LTS upgrade alert- How to handle it?
119971
Install 17.10 on 32 bit machine
59088
How to upgrade to a newer release of Ubuntu using the Live CD?
421
How do I update a Drupal distribution to a newer version?
27831
Can't downgrade database from version 2 to 1
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
125352
How to install libboost_version1.59 or newer on Ubuntu16.04
22617
Downgrading from Safari 12 (beta) to Safari 11
119144
Going from Ubuntu 16.04 to 18.04, GNOME not working properly
102559
How to install package from newer distribution?
211
Can I skip over releases when upgrading?
62279
18.04: How to get Wayland back after upgrade to 18.04?
3670
How to downgrade an app if it has been updated via Play Store?
13970
Why am I not getting the Ubuntu 18.04 upgrade?
24165
Upgrade to version newer than repositories