Warning: Be VERY careful if you attempt to get older hardware working with Windows 10 by enabling disabled devices
For the most part it went reasonably well. Initially I tried to some easier options to create a 'disposable' installation like installing to an old junk hard drive (with SMART problems), sd card, flash drive, etc. But Microsoft wants you to commit and doesn't make it easy to install on these devices.
It actually worked pretty well on the older hardware, but then I realized a few devices weren't working and started trying them to work. Some of the device that weren't working are things I never use like express card. But I wanted my SD card reader, free fall sensor, and smart card reader to work. I read in another forum that enabling a particular disabled intel device would fix the sd card reader (but that you may have to repeat this every time you boot). Sure enough the card reader now works. Then I start transferring a gigabyte or so of photos, seems to be working fine... I walk away. When I come back the photos aren't on my computer, my desktop is now empty and I have a dozen alert boxes for all sorts of programs that where running but now have crashed or are missing critical files. Some keys on my keyboard no longer work and my trackpad is dead. I power off and reboot. Check properties on my hard drive and 100GB of data was wiped from the drive while trying to transfer some photos.
So then I built PE recovery media restored my backup and had Windows 7 working again and all my data in under 2hrs.
So much for Windows 10 being an improvement... After this I might switch back to Linux full time with no windows installs save a few VM's.