Alexis, I wonder if you are trying to ask: If I install 10 on top of a legal copy of 7, can I then legally install that same copy of 7 on another partition? The answer is "No."

I still have my...

Alex, years ago, I had a shop install my legal copy of XP onto my new Win 7 computer. Later, I added a third partition for my legal copy of Win 8. Later, I upgraded 7 to 10. All three partitions have...