When my battery died during a release upgrade and I started it again, it showed me a scan disc check screen. After which, it returned the black screen of before.
I pressed all the function keys one after the other then ran my hand all over the keyboard.
I am not sure what particular key triggered a 'DOS looking' log in screen. I entered my old username and password and it brought me to a 'terminal like' interface.
I ran
sudo apt-get upgrade
and it returned
dpkg was interrupted you must manually run 'dpkg -- configure - a'
How to manually run 'dpkg --configure -a'???