apt-get claims 16.04 LTS does not exist
1520
How to install software or upgrade from an old unsupported release?
74227
dpkg error when using apt-get install
113145
What does 'apt-get install update' do?
2236
Why don't the Ubuntu repositories have the latest versions of software?
115722
Apt sources.list problem , packages not found?
138747
How to list installed packages in apt that are not backed by a repository?
12368
A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
148965
apt vs apt-get error code
90937
apt-get update errors
87672
Apt-Get system completely broken. possible to completely reinstall it?
95210
APT wedged by kernel version mismatch
8722
How to make apt recognize an installed tar package?
10193
Failed to download repository information due to missing CDROM
100494
Update Manager asking me to update kernel but apt-get upgrade does not?
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
11909
404 error with apt-get update, Don't have any PPA's
152479
Why are apt-get repositories hardcoded to a specific release?