Solved Macrium Reflect 8 cannot see drives

I have a Reflect 8 Rescue USB, built from my main PC (#1 system, Win11, NVMe's), which I can use to back up C: on both systems. However, on #1, it only finds the C: drive whereas on #2 it sees all the drives in the PC, so there I can create mrbak files for data backup and save mrimg files of C: to local HDDs. On #1, I can do neither, and can only save images of C: to an external drive.
I have tried 'Check for devices missing drivers on boot' in the Resue build but that did not help.

I thought this may be to do with Intel IRST NVMe drivers, and extracted the drivers from SetupRST.exe and installed those, then rebuilt the Reflect image - no change. I know the RST drivers were not previously present, having done "pnputil /export-driver * D:\Drivers_Backup" before and after, and found six new driver folders present after the RST drivers install. That said, why should a Reflect boot find one NVMe drive (C:) and not the others (D:, E:) ?.
I also compared devmgmt>Disk drives>driver>driver details before and after the RST drivers install, no difference apparent.

I have attached images of the Reflect build drivers located and of the drives present.

Puzzled & frustrated - any ideas, anyone, please?

Edit : first time I have marked a post (this post) as Solved, so uncertain right now if making it solved will close it for further edit.... I'm about to find out!

No replies on this, but I have made do with Macrium Free instead - that does show all SSDs & HDDs; no Rapid Delta Restore AFAIK, but I'll live with that...