UNEXPECTED INCONSISTENCY : RUN fsck MANUALLY The root filesystem on /dev/sdb9 requires a manual fsck
BusyBox v1.21.1(Ubuntu 1:1.21.0-1ubuntu1) built in shell(ash)
y to fix
once done type exit, it will boot as normal
and press enter whenever the terminal asks for premission.
Now after the process finishes, type:
After rebooting, open the terminal. Make sure you have internet connectivity and type:
sudo apt-get clean
sudo apt-get update
sudo apt-get updrade
Now, your system will start normally from now on.