I’m going to attempt to create a new fresh image using AHCI instead of RAID. If this works, I have no problem using AHCI instead of RAID.
Ok, but you can switch your existing RAID On Windows installation to AHCI, following the steps from the link. I did it with my new Dell Optiplex 5070 SFF, which came with an RAID On installation of Windows 10. I also had to disable Secure Boot and enable UEFI Network stack in BIOS to make it bootable with FOG.