I got a Chuwi Hi8 Air for dirt cheap and immediately nuked it and made one partition for a Windows install only. It’s a pretty dumb idea to have a dual boot OS on 32GB of storage. Anyway, I found a link to a pre-release of Windows 10 “LEAN” that I grabbed from some Italian website and used OEM drivers and tools from here:
Took a few attempts but I eventually wiped the dual boot screen and it boots up a very nice, lean version of Windows 10. After install only 6.7GB of space was taken up. I also paired it up with a 256GB microSD.