I have the ISO downloaded, but not written to a Flash drive yet and won't do it until tomorrow. I'm just too tired tonight.
Bathtub plumbing issues are finalized; upgrade is complete.
So, tomorrow I will use Rufus to put the ISO onto the flash drive and then install to my pristine second partition.
The tutorial, which I have written specifically states and warns not to relocate any other system folders than Users folder. This from very beginning of the tutorial:
(Extract from Users Folder - Move Location in Windows 10 - Windows 10 Forums)Microsoft does not recommend relocating, moving ProgramData, Program Files, Program Files (x86) and Windows folders. Too much is depending on information and data stored on these folders and relocating them might cause serious issues
A relocated Users folder does not prevent in-place upgrade, I've done a few upgrades today without issues. A relocated Program Files folder makes in-place upgrade impossible. That's the culprit, reason for your issue.
You might get upgrade done if you move Program Files back to C: drive but I doubt it. I recommend a clean install to prevent future problems.
I just don't understand why one would want to move the Program files directory over to a new hard drive. I understand that one would want to install programs onto a HDD so that one could save space on the primary SSD that one has Windows installed on, but to change the ENTIRE Program Files folder to a different location seems a little excessive IMHO.
Please explain if I sound ignorant on this opinion or if my conclusion seems baseless.
Program Files (x86) folder only exists on 64 bit Windows, that's where 32 bit software will be installed on 64 bit systems. Program Files folder exists on both 32 and 64 bit systems, it's where 32 bit Windows installs all software by default, and on 64 bit systems that's where 64 bit software will be installed.
If you have Windows 10 64 bit, you most certainly have Program Files (x86) folder.
Yes, I can also hide folders and get a screenshot and post "See! I have no Windows folder!".
Oh no. It is now there. How did that happen?