I have a raid controller with ahci drivers installed, Pop! Os refuses to boot when i install the os on the nvme card, no matter how many times i install it it does not work. I even removed my 2 other sata drives to see if it will work on the nvme bit it keeps refusing. The funny thing is, when i install linux on the nvme drive it wil overwrite a string in the bios and i cant boot in my m2 sata drive by default, i have to press f12 and select it manually. It was so frustrating a few months ago that i did a fresh install and deleted everything on the nvme drive