Hi Guy sorry to add to confusion but your RAIDR should not show up in bios if it is switched to UEFI mode (Yes I know it sounds stupid) If the OS has been installed from a UEFI device to create 4 partition on your RAIDR you will see a BOOT MANAGER not the RAIDR you boot to the boot manager. And if set to secure Boot boot manager will disappear because its eh not secure.
The issue is this card is not truly UEFI compliant If it was it would show up in BIOS as UEFI ROG RAIDR etc dont think ive ever seen a post showing that, all posts state its boot manager.
If im wrong could one of the admins show bios screen shots of a bios with the ssd in uefi as a bootable device.
ASUS ROG Maximus Extreme VI, i7 4770K, Corsair H110 Hydro, 16GB Corsair Dominator Plat, ASUS ROG RAIDR SSD 240gb, Seagate Barracuda 2TB, ASUS 248 144hz monior, Corsair TX750M PSU, Gigabyte GTX780 Windforce 3 GHZ edition, Razer Naga Hex mouse, Corsair K95 Keyboard.