Fixing failed upgrade to 13.10
122323
Ubuntu 13.04 to 13.10: Filesystem check or mount failed
967
How can I avoid "please insert CD/DVD" error when updating Ubuntu?
121462
Fixing a broken packet system (apt-get)
77705
Unable to upgrade in ubuntu
80233
Upgrade to 20.04 from 19.10 isn't available
12578
How do I upgrade to a newer version of Ubuntu?
404
Last upgrade crashes network manager (no internet connection, no applet)
16837
Unable to upgrade from 14.04 to 14.10 "Cannot Calculate Upgrades"
5316
Update from 14.04 to 16.04 failed with GPG error
64744
Restarted computer during update; "the system network service is not compatible with this version"
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
66130
13.10 BCM4313 network problems after update
77062
Updates stopped and fix-broken install is broken
36703
How do I upgrade from 12.10 to 13.04?
11579
Broken dependencies after upgrade
119943
Where can I find a repository for older unsupported releases?
20398
dpkg broken after 15.04 upgrade fail