When I built my computer, apparently I formatted my SSDs to MBR. Well, I wanted to upgrade to Win11, and of course it wouldn't let me because I wasn't using UEFI with secure boot activated. So, I saw that I could convert my MBR to GPT without data loss, so I did... Well, the data is all still there. However, I can not boot from this disk. I had 2 SSDs (NvMe) installed and I had a version of windows installed on each. After I converted the 1 drive I still couldn't find it when I changed the BIOS to UEFI, so I kept messing around, and then I couldn't get the computer to boot at all. It was stuck in a loop. I bought a 3rd SSD (I know, I wanted more space anyway) I installed windows 10 in GPT from the start, and I have the cpu up and running again.
The thing is, is the 2TB drive I originally swapped from MBR to GPT has a lot of settings and programs and such, that it's the version of windows I'd prefer to upgrade. And everything is still on the drive, I just can't boot from it. I can't use the USB method of entering windows installer and repairing the drive or anything else. I tried reinstalling the boot partition, but when I compare the drive to the current bootable drive, the partition information looks different. Like I am still missing something related to booting windows. E: on Disk 1 in the photo is the partition with the version of windows I want access to. It seems like there must be a simple solution, since all the data remains, it seems like I'm just missing one thing.
Any help would be greatly appreciated.