Ubuntu 16.04 LTS upgrade problem
1520
How to install software or upgrade from an old unsupported release?
13308
Ubuntu 14.04 LTS showing 'version message write failed' message while booting
26851
Ubuntu 16.04 LTS unrecognized hard drive -- not enough disk space to install
151605
upgrading from 15.10 to 16.04 apt not installed
119595
Is it necessary to upgrade to 14.04 LTS or can I stand in 12.04 LTS forever with no problem?
31892
New "Ubuntu Software" not working (16.04)
9901
How to upgrade from 18.10 to 19.10, using the command line?
65808
17.10 to 18.04 upgrade freezes during boot
62881
After upgrading from Ubuntu 14.04 LTS to 16.04 LTS, last process left cleaning, how to perform?
86777
Distribution upgrade problem "No new release found"
2670
Why is "No new release found" when upgrading from a LTS to the next?
110148
Why does `do-release-upgrade` skip a version?
20751
Problem upgrading Ubuntu 9.10
56282
16.04 LTS upgrade alert- How to handle it?
154622
How do I resolve this installation error?
51350
While updating the ubuntu 16.04 does not have a Release file Error
69200
How do I reinstall Ubuntu Software in Ubuntu 20.04 LTS version?