Can Ubuntu 18.04 be fixed without reinstalling
5413
How can I repair grub? (How to get Ubuntu back after installing Windows?)
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
149437
Ubuntu equivalent of system restore? Does it exist?
6501
How to reinstall configuration file
28979
Ubuntu system is broken after accidentally uninstalling many packages
37440
How to reinstall Ubuntu 13.04 Raring Ringtail safely?
25739
How do I reinstall Unity?
129223
Ubuntu upgrade from 17.04 to 18.04
108176
Ubuntu 16.04 broken kernel packages won't let me install or remove anything with apt-get
30233
How can I fix/install/reinstall grub?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
27485
“Sorry, ubuntu 13.04 has experienced an internal error”
28535
How I do a system restore?
47808
"The following packages were automatically installed and are no longer required:" what to do?
100135
What does "upgrade to 18.04" mean?
36111
Can I uninstall and reinstall Ubuntu Software Center?
7460
E: Unable to correct problems, you have held broken packages