How to reinstall a RAID 1 pair- Windows 11 keeps looping creaing more boot records but wont install fully

Hi,

I have a RAID 1 disk set (2 seagate HDD) as my data store. My System drive died (M2 SSD). When I disconnect the HDD and try to install windows 11 my MSI MOBO needs the Intel raid drivers installed before I continue with the load windows (onto a new SSD - not onto the raid pair).

Following the instructions from various folk at MSI support I have the drivers but each time I reach the choose a drive to install windows screen and select the drivers the one I need doesn't install I just get an "error occurred" message. Picking a different option (there are 3) the system gives the impression they were installed. But then after supposedly going on to install windows on the available partition on the SSD it loops around to the same place.

Using bcdedit I found 4 copies of windows 11 attempts none of which work. I erased the duplicates but now when I try again the drivers no longer appear in the window and windows still wont install.

I need that data on that RAID pair. And I am at a loss what to do. The people at MSI say it's a windows problem. What I need is a RAID 1 expert with MSI installs / reinstalls experience please.

All help greatly appreciated

Thanks