Is it possible to have Windows and Mac OS on the same PC.
Can this be done: 2 SSDs- 1 running windows the other running Mac OS.
When I need Windows i plug in the Windows SSD, and un-plug the Mac SSD.
And Vice-Versa when I need Mac OS
Running on the same motherboard
It is technically against the end user agreement to do this, because doing so requires modified mac OS images. Virtualization also requires Apple hardware per the user agreement if you're thinking about that route.
At the moment, your asking a question that's equivalent to getting advice about how to find commercial ROMs for Emulators.