@Esteban
SATA disk OS controller have nothing to do with NVMe mod or the OS NVMe controller.
If a standart SATA disk is not present in OS Disk management/Device Manager, then it should also not be present in bios SATA disk devices…death or baddly conected.
Of course the AHCI or RAID should still be enable in bios, NVMe disks or mod related will not use it, but still needed for standart SATA disks… has you may already know.