Cloning disk failure

I have been trying to reinstate the M2 drive to the C operating systam drive. The drive was originally fitted when I had W10 beta channel on the pc and the OS was successfully transfered to it from a 2.5 SSD. Then I got the system in line with the W11 requirements with TPM firmware, bit locker and secure boot with help from the forum members. After changing to DEV channel, Microsoft offered W11 and I upgraded. As soon as the beta channel was included in the W11 test program, I switched back to the beta channel, before the divergence of DEV and beta. I cloned the M2 to another 2.5 SSD and removed the M2, to fit in another pc which did not work. Later, I decided to put the M2 back in the pc and clone the OS back to it. It would not work.
Even after completely removing the bit locker, I have not been able to clone C onto the M2. It will function perfectly as a data drive.
I have tried Macrium reflect and Mini Tool Partition Wizard 10 with the same results. The drive ends up with 4 partitions as follows:

GPT (EFI SYSTEM PARTITION)
GPT (RESERVED PARTITION)
GPT (DATA PARTITION)
GPT (RECOVERY PARTITION)

The data partition in the C drive is marked BOOT, but not in the cloned drive.
When I try to boot from the M2, it ends up with a green screen saying "inacessible boot device".
Recovery options including cloud do not work.
I'm surprised that Windows does partially start.
The 2.5 SSD is in a caddy which can be switched on or off, and I can select the boot drive in the bios "windows boot manager (and the drive name)".

The data partition in the C drive is marked BOOT, but not in the cloned drive.

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It will only say boot when you are booted into it.

When I try to boot from the M2, it ends up with a green screen saying "inacessible boot device".

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Is the m2 disk nvme or sata ?

Load up the system hive and look in services for stornvme and see if start type is 0

The M2 is nvme, I think, a WD Black SN750 500Gb.
The start type is (0).

I am making a recovery USB drive and will try it out and report.

I made a recovery drive with a USB stick which took a couple of hours, and after an hour running it there was total failure.
This was after removing the secure boot on both drives.
Next step will be to attempt to shut down TPM.

I thought I would be able to solve the problem when I downloaded an ISO of W11 64 pro from Microsoft to do a clean install on my W11 beta channel machine. One screen past the licence key one, was "your pc doesn't meet the minimum requirements for W11". And that was it. I checked with PC health check in my Microsoft account and the fTPM 2.0 and secure boot are both enabled and working and as before, the hardware all qualifies. The storage is set at GPT, and UEFI set in the bios.

tinmar49 said:

I thought I would be able to solve the problem when I downloaded an ISO of W11 64 pro from Microsoft to do a clean install on my W11 beta channel machine. One screen past the licence key one, was "your pc doesn't meet the minimum requirements for W11". And that was it. I checked with PC health check in my Microsoft account and the fTPM 2.0 and secure boot are both enabled and working and as before, the hardware all qualifies. The storage is set at GPT, and UEFI set in the bios.

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Is your CPU compatible? There's no mention of it

I did say the hardware qualifies, and that is how I got W11 on my machine in the first place. Check out the "My Computer". I am trying to get the WD M2 500Gb to revert to C drive after changing to a Samsung 850 Pro 256Gb.

I had success eventually with the ISO, I had the fTPM running and secure boot set for the M2 drive. The first try after double checking everything failed because the mouse would not work so I couldn't get past the first screen. Then the second attempt failed when nothing happened after the "press any key" and I got bored ten minutes later and shut down. Third time lucky, it ran exactly as it should and I now have the M2 back as C drive. No idea why it should be so bloody minded. Back in the beta channel and have put back the basics manually from USB drives and another pc.