"Welcome to emergency mode!" Think it is a fsck problem

You could run fsck from Ubuntu Live.

1. Switch on your computer. Boot into a Ubuntu Live DVD/USB (try it without installing).
2. After it loads, open a terminal by pressing Ctrl+Alt+T

3. In the terminal, run:

   sudo -i
   fdisk -l
   

   fdisk will inform you what your partition / (root) is called. In this question it is /dev/sdb1.

   Then you should continue by running:

   umount /dev/sdb1
   fsck -y /dev/sdb1
   poweroff
   

   If the umount command complains that sdb1 is "not mounted", that is not a problem. We wanted it to be "not mounted" :).

4. Remove the DVD/USB. Switch your computer on again, to boot from the SSD.

I don't know if u have solved your problem. What I did is :

sudo nano /etc/fstab

Then delete what you added there for sdb1 and then run:

sudo systemctl reboot

It says it's corrupted, so I don't know whats up about that, but I hope this could help someone who can't run their Linux.

I just had the case with Emergency mode. In my situation I followed an installation tutorial which suggested to edit some of the options for my mount points in /etc/fstab . By removing the extra options, my server rebooted without problems.