How can I boot my Surface Pro 3 running Ubuntu properly?

1. 2017-07-05 at 7:46 PM UTC

   #1
   

   SBTlauien African Astronaut
   I'm running Ubuntu 16.04.2 on my Surface Pro 3 and the only way that I can currently boot is by putting in a live USB, pressing C(to get the Grub2 command line), and typing these lines...
   
   

   set root=(hd1,2)
   linux /vmlinuz root=/dev/sda2
   initrd /initrd.img
   boot

   
   
   What do these commands mean? Obviously the last is to boot the system, but what about the others?
   
   This is what my partitions look like..