Ga-z270x-Gaming 5 | High Sierra 10.13.6 | Standard SSD wont boot with 960 Evo Nvme installed

[Levitys]

Hey guys...

So I'm having a l little issue I was wondering if someone could help.
I have High Sierra 10.13.6 running on a standard sata ssd.
When I upgraded from sierra I couldn't get my nvme drives working so I just threw in a regular ssd.
Well the time came to where I would like to sell some of my nvme drives since they're lying around useless and when I plug them into my mobo (ga-z270x-Gaming 5) and go to boot up High Sierra will not boot with any nvme drive installed. I am still trying to boot off my regular sata ssd so I can format the nvme's. It goes through verbose mode super slow and then eventually just ends up restarting. this happens continually.
Any idea why this would happen? I thought 10.13 was supposed to support them natively?
Anyways, Wondering if anyone's had this particular issue?

Thanks in advance!

 

[iJamesGC]

Hello Levitys

Did you get a resolution for this? Did you double check the MB Manual to ensure you connecting to the proper ports? If you are using the M.2 port you have to ensure you are connecting your SATA cables to the correct ports.