I thought this idea would work but it didn't
I made Acronis backup images of my computer when I had Windows 8.1 installed, plus I made some images when I had Windows 10 installed.
I thought I could easily use Acronis to restore either operating system when I wanted.
When I wanted to record using Windows 8.1 I could just restore the Windows 8.1 image.
When I wanted to record using Windows 10 I could just restore the Windows 10 image.
But earlier today I tried to restore the Windows 8.1 image and Acronis couldn't do it.
So I restored the Windows 10 image with no problems or issues.
When I was trying to restore the Windows 8.1 image I thought I saw a black screen saying something about the Master Boot Record please boot from floppy.
I don't know what Windows 10 does to your hard drive but I'm thing it does something that Windows 8.1 did not do.
I'm thinking if I really want to have the ability to go back and forth between two operating systems I may have to install Windows 8.1 on a separate hard drive and swap drives when I want to use that.
If you have any knowledge about this please post.