Changing BIOS from Legacy to UEFI/BIOS so I can use Win 11 on this PC

Pentagon said:

Copy & paste line by line and wait for the system response after each input

Do not begin before I see the result from diskpart.

diskpart
sel disk 1
list par
exit

Can you read this one?

@ Dulcina - I have a clone of my C and F drives on Macrium Reflect

Okay, I think I did everything as instructed. Here is what my Disk Management shows now. However, I have been to the BIOS setup several times, finally found a reference to UEFI, clicked on it, and saved. When I look at the System, however, it says I am still on Legacy. I could post screen shots of my BIOS setup, but I don't know how without using stitch and snip.

@therealsimpsons,
You still have not converted drive 1 to GPT, but you are booting from drive 1 which is great progress. As it stands now, mbr2gpt will fail on drive 1 because you now have 4 partitions on it. You may have enabled UEFI in your BIOS but it will not boot in UEFI mode because the drive was not converted to GPT which would have also created a FAT32 EFI System Partition (ESP) to boot from in UEFI mode.

The next steps I would do is to disable the recovery environment, delete both recovery partitions on Drive 1 and then try mbr2gpt. Since @Pentagon has been walking you through everything, I will defer to them.

Here is what I did, and the Disk Management after finishing. I know I screwed up because I didn't unplug the external drive H. Please send commands to change it. Thank you. Edit: I put a clearer shot of Disk Management in a reply.

run
mbr2gpt /validate /disk:1 /allowFullOS

- - - Updated - - -

OK, we are ready to convert to gpt.
run
mbr2gpt /convert /disk:1 /allowFullOS


Boot into BIOS and change to UEFI

The rest will be done later

What does call Win Repair message mean?

As info, each time I ran the disable..the answer was RE is already disabled