My copy of TD2 has the same at least. It’s probably something that happened during the time when machines from an original PC to things like fast PS/2s without 5.25″ floppy drives were used at the same time. I wonder why they didn’t make separate boxes for 5.25 and 3.5″ floppies though.
Interestingly they (and the previous review!) complained about the keys used to stear the car. Cursor keys in the PC version and IJKL in the C64 version (“why keys that are placed so close together?”).
Could you imagine that today? People complaining about WASD being used for a shooter for example. But I have to say, when I played the game as a kid, I had my problems with that too and I remember using both hands on the cursor keys to play. Of course that made every difficulty level beyond 1 unplayable 🙂