After selecting Linux Lite in grub menu.... Welcome to emergency mode!

[hughparker1]

I have an old BIOS system DELL VOSTRO 1520 with Multi-boot setup with Windows 10, Debian, Linux Mint and Linux Lite 3.  LL3 is in charge of grub menu and was working fine till today. 

After Anniversary Update for Windows 10, LL3 is still in charge of grub menu and it looks exactly the same, but I can't boot into LL3 although my other distros are all working fine.

When I select Linux Lite from the grub menu, I get the following message....

Code:

Welcome to emergency mode! After logging in, type "journalctl -xb" to view
system logs. "Systemctl reboot" to reboot, "systemctl default or D to
try again to boot into default mode.
Give root password for maintenance
(or press Control-D to continue):

I tried to log in but get message 'sulogin: crypt failed: Invalid argument'

I'm not sure how to proceed from here, tried to google but couldn't find anything that helps. Any advice or guidance would be appreciated.

EDIT:
I found this solution to re-install grub....

https://www.linuxliteos.com/forums/insta...d-distros/

Boot computer with live Linux Lite USB # My Linux Lite is on partition sda8

*  When up and running, open a terminal

Code:

$ sudo mount /dev/sda8 /mnt            # Mount the LL root partition on the HDD to the live environment

$ sudo grub-install --boot-directory=/mnt/boot /dev/sda        # Install grub to the MBR of sda drive

$ sudo umount /dev/sda8

reboot but error still remains