What I think I'll do
I have a laptop that's running Windows 7, and I've been wondering what to do. I don't especially like Windows, but it's occasionally a nuisance not to have a copy. Here's my plan:
Boot off a Linux USB and take an image backup of the Windows 7 disk.
Upgrade to Windows 10.
Take another backup of the disk.
Install Mint.
Create VMs of Windows 7 and 10.