How Do I Repair Ubuntu?

How do I fix broken Ubuntu OS?

Ubuntu fix broken package (best solution)

1. sudo apt-get update –fix-missing. and.
2. sudo dpkg –configure -a. and.
3. sudo apt-get install -f. the problem of a broken package still exist the solution is to edit the dpkg status file manually. …
4. Unlock the dpkg – (message /var/lib/dpkg/lock)
5. sudo fuser -vki /var/lib/dpkg/lock.
6. sudo dpkg –configure -a. For 12.04 and newer:

How can I fix Ubuntu OS without reinstalling it?

First of all, try to login with live cd and backup your data in an external drive. Just in case, if this method didn’t work, you can still have your data and reinstall everything! At the login screen, press CTRL+ALT+F1 to switch to tty1.