How to create a RAID 1 array on my Gigabyte motherboard

I have a custom built PC running Windows 10 on a Gigabyte AORUS GA-Z270X Gaming 7 1151 7th Gen DDR4 RGB Fusion motherboard.

The machine contains 3 hard drives; one for the OS and two used in a RAID 1 array for data storage.

It has worked flawlessly for 4 years, but to prepare it for a Windows 11 upgrade, I had to make some changes, which required modifications to the BIOS. Somehow, this has resulted in the RAID 1 array becoming broken, so I'm seeing them as two separate disks now. Here's my current disk configuration:



Disk 0 and 1 are the two disks I would like to be configured as RAID 1.

Can anyone explain how I can create this RAID 1 array?

Thanks Selden, I've created a post on a Gigabyte forum as I suspect my issue is very specific to my motherboard and so probably won't get much help from a Windows forum.

Building RAID 1 (mirroring) array on AORUS GA-Z270X-GAMING 7 - Part 2

You probably had created the RAID array on BIOS.
Disk mode must be set to RAID not AHCI.
If you haven't changed anything on the drives, when you boot you will have the array back.

Megahertz said:

You probably had created the RAID array on BIOS.
Disk mode must be set to RAID not AHCI.
If you haven't changed anything on the drives, when you boot you will have the array back.

Unfortunately, my PC won't boot into Windows unless SATA mode is set to AHCI as it doesn't recognise the NVME.

I remember (and have notes) from when I originally setup the PC and created the RAID, this is what I had to do. Unfortunately, this doesn't appear to work anymore, possibly due to all the other BIOS settings I've changed recently.

sygnus21 said:

As an owner of numerous Gigabyte boards, including the Gigabyte GA-Z270X-Gaming 8 board listed in my system specs under system two, I know these boards have instructions on how to setup RAID. Why are you not looking to Gigabyte?

You can go here and download the "RAID Setup Guide" - GA-Z270X-Gaming 7 (rev. 1.0) Support | Motherboard - GIGABYTE Global

Outside of that I can't help since I don't have RAID setup on my PC. That's done on my NAS running RAID 10.

Anyway, what am I missing?

sygnus21, you're not missing anything!

I have watched multiple videos and downloaded and followed the instructions in the RAID Setup Guide. They don't work. I do everything suggested without error, but on booting into Windows there's no RAID array.

I have logged a call with Gigabyte, but so far haven't received a reply.

So, what am I missing?

- - - Updated - - -

Samuria said:

Lots of videos on Youtube How To Setup RAID on Z97, Z170 & Z270 Motherboards - YouTube

Thanks, but I've watched the videos and read the Gigabyte RAID instructions, but nothing seems to work. I'm at a loss.