I went through this Stuck at fsck "/dev/sda1: clean xxx/xxx files [...] " after upgrade to Ubuntu 16 from 14 link and went to try the solution but on the "error" screen i.e { /dev/sda1: clean xxx/xxx files} the notebook hangs and i can't enter Ctrl + Alt + F1 to add the commands.
Hence, i'm still struggling to find to solve this issue.
Many thanks.