I started the update process for Ubuntu 13.04 from 12.10. Then the power cord was accidentally pulled out and the computer battery died. Now I get the following message when I turn it on "General error mounting filesystems. A maintenance shell will now be started. CONTROL-D will terminate this shell and reboot the system." Then it has "root@[username]-HP-G60-NOTEBOOK-PC:~#"
I am a beginner Ubuntu user and prefer step by step instructions. Also, I am sorry if this has been posted before, but I searched and couldn't find anything that seemed to match.