I need to upgrade 8.10 to 13.10
1520
How to install software or upgrade from an old unsupported release?
11556
Can I smoothly upgrade from one LTS to next LTS release?
102559
How to install package from newer distribution?
105335
How do I upgrade my Ubuntu server from one LTS version to another? Is this safe?
20399
How do I upgrade from 14.04 LTS to 16.04.1 LTS?
4660
Should I be offered the option to upgrade to 18.04.1?
113056
How to upgrade from 12.04 to 12.10 using CD?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
8962
How to install multiple versions of the same software?
145917
Removing broken packages on distro update (13.04 to 13.10)
135383
Unable to update my system Ubuntu13.04: Getting message - requires installation of untrusted packages
2136
How to roll back Ubuntu to a previous version?
50810
No upgrade available for 19.04 from 18.10
59088
How to upgrade to a newer release of Ubuntu using the Live CD?
128471
How do I update from 9.0.10 to 9.1.0?
10709
Can i upgrade ubuntu without losing my apps and files?
126659
upgrade from 11.10 to 12.04 - No upgrade option available in update manager