As far as I understand your screenshot the boot sequence has finished. You do not start the graphical desktop environment if you are in runlevel 2 as opposed to runlevel 5 with its automatical start of the Xserver.

Now you are in the shell where you are root and should be able to issue the commands
Code:
chroot /UNIONFS
dpkg -a --configure
apt-get -f install
exit
reboot