It’s not an unknown limitation for floppy disc only file systems to not have subdirectory support, you only have 80-400KB[1] of data on the disc so can’t have t

It’s not an unknown limitation for floppy disc only file systems to not have subdirectory support, you only have 80-400KB[1] of data on the disc so can’t have too many files on a disc anyway. Why waste precious RAM and disc space (either in FS metadata overhead, or just more DOS code) on a feature that isn’t really vital? I think Apple II DOS 3.x is the same (and also on the original Mac FS although it was hidden by the UI). Once hard drives began to become reasonably affordable it became a problem so you get updated systems like MS-DOS 2, ProDOS etc. [1] by the time high density floppies came out newer file systems were available.