"/dev/sda2 contains a file system with errors, checked forced.
Inodes that were part of a corrupte orphan linked list found.
/dev/sda2/ UNEXPECTED INCONSISTENCY: RUN fsck MANUALLY.
(i.e. without -a or -p options)
fsck exited with status code 4
the root filesystem on /edv/sda2 requires a manual fsck
Busybox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs)
"

Solved this
At the prompt write $ fsck -y /dev/sda to run manual check on the filesystem. The '-y' option will automatically answer yes to all question.



http://askubuntu.com/questions/890501/the-root-filesystem-requires-manual-fsck