

That’s strange, could you run sudo blkid again and check the UUIDs still match between the two drives? Also you should now be able to press e on the grub boot menu, can you scroll to the bottom and then send a screenshot of that as well?
Edit: and do the UUIDs of either disk match what you see in that error message?
Yeah sorry, I’ve got no idea why its still not working, I can think if a couple of other things to try but they probably won’t work lol. I think it will be quicker and easier to do a fresh install at this point