Issue with two drives

[Gadgety]

I had the same problem just now after adding new hdd's to the PC which led to my switching around which SATA ports I was using for each device. There's a mix of SATA 2 and SATA 3 ports on the board. Upstream these are handled by different chipsets. When I plug the optical drive into the SATA 2 ports MakeMKV recognizes both drives. When I plugged one of them into the SATA 3, handled by a Marvell chipset I believe, MakeMKV doesn't identify it. I checked and apparently upstream the SATA 3 ports on my motherboard are identified as SCSI drives due to the controller.