I'm going to reserve one of my PCs for games and entertainment only for me and my kids. Since I have a lot of great old games that only work in 95 & 98. I would like to to able have those 2 systems ...
Shouldn't be hard at all. Just give each of them a root partition, and set up a common swap. If you need/want >1 partition each you could do that too, but there shouldn't be any magic to setting it up ...