Recap after using a Square Buff Sander

We rented a Square Buff Sander to try to restore our old hardwood floors and it ended up that we should have rented the drum sander. This is a short recap of what we found after we had gone over our floors with 36 grit, 60 grit and 100 grit sandpaper on the square buff sander and gone around the edges with a palm sander