Install ubuntu 18.04 at MSI laptop

2019 2 10 :
I try the following process to install ubuntu 18.04 at MSI GF75 8RC laptop
 1. Turn off the MSI BIOS Security boot Mode as 

2. Turn off the "fast power on"  and choose  UEFI mode

3. Use ISOtoUSB create a USB bootable disk  with "ubuntustudio-18.10-dvd-amd64"

4. continue click any button when boot up and NB will enter ubuntu install window, high light the "Install Ubuntu Studio" option but don't press enter button, press "E" button instead.

5. Add "modprobe.blacklist=nouveau" after "quiet splash" , the following diagram  step 1 and press F10 reboot step 2

6.Choose Install type as Something else

7. I choose the second device to store boot loader

8. set the second device as the default boot device - the grub is show up .