Upgrade Ubuntu from 12.04 to 13.10
211
Can I skip over releases when upgrading?
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
142143
Install Ubuntu 12.10 instead of Windows 8
16578
How to upgrade a single package using apt-get?
58979
How can I upgrade Ubuntu LTS to the next one offline?
135383
Unable to update my system Ubuntu13.04: Getting message - requires installation of untrusted packages
5882
How to upgrade Ubuntu from an ISO image
15687
How do I resume a release upgrade?
72296
Upgrading Ubuntu from 12.04 to 12.10 broke my system, completely.
153774
Upgrade to Ubuntu 13.10 from ISO image
75798
How to upgrade to the latest GNOME version?
113056
How to upgrade from 12.04 to 12.10 using CD?
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
19288
Update manager doesn't offer an upgrade to the new release
67365
How to install another Ubuntu alongside different version of Ubuntu?
102559
How to install package from newer distribution?
1520
How to install software or upgrade from an old unsupported release?