I came in to suggest this. If you look at those old dual movie single layer disks, right around the hole in the middle there might be tiny words that show you which movie is the one that is on the other side (like Fletch this side up, Caddy Shack is on the other side).
I have a few Cheech and Chong movies that are like this on DVD. Think of it like an old record album.
This is one of those situations where a “like” button would be handy. The question has been asked, answered and acknowledged, so I really have nothing to contribute other than to say I’m happy the OP can finish the movie.
Also, since I too have an Xbox, this will now be the first thing I think of if I ever encounter a similar screen. I have learned today.