My computer just turned off during an update from 12.04 to 14.04 it was in the middle of installing all the new software and packages. When I tried to turn it back on it would not boot up at all. Gave a black screen with a bunch of "command" lines (not sure what to call them). Have I lost everything on my hard drive? Is there a work around so that I can at least get back to the old version and try again?
Any help/links to help would be greatly appreciated thanks!