Firstly I want to say a big thank you for the helpful advice.
Here's what I think makes best sense to me right now.
I uploaded W11 two nights ago, and btw I really like it up until now. Start up is faster and some programs such as Photoshop load faster and so far every program works.
Hi and thanks for any help.
About 18 months ago a technician in Portugal installed 2 SSD drives for me and a version of Windows 10 - but in Portuguese.
I then installed a version of W10 in English and all has been working fine; after a few bumps on the road.
Anyway, I'm using the C drive but...