I’m attempting to install a Samsung 960 Pro into Slot 3 of a Mac Pro 5 1 that’s running High Sierra. I've seen claims that there’s native support for NVMe drives such as the 960 Pro, and I have gotten the Mac to see the drive in disk utility in both safe mode and recovery mode. I’ve formatted the drive to Mac OS Extended (Journaled) for use as a storage drive. Now, on startup, the computer just reboots continuously until I power it off and remove the NVMe drive, and it even does this in safe mode. I can still see the drive in recovery mode. Is there anything that can be done to fix this?