Yesterday, I happened to notice that my computer's C drive appeared in File Explorer with a big red bar, indicating that free space was rapidly vanishing. Since TSW, TSW2, and TS installations are very large -- especially the latter, I immediately thought about moving them to a roomier (and probably faster) drive. After trying in vain to search these forums for how-to instructions, I found them here: https://dovetailgames.kayako.com/Kn...lator-or-train-sim-world-to-a-different-drive . The procedure leaves Steam itself on the drive where it was initially installed, but moves all of the cumbersome Steam Library game files to the selected drive.