PvK, I hear you about the Mac locking the floppy.
It bugged me too, until I discovered it only does that when you have loaded something from the floppy. Resaving the open file to the floppy or closing the file, releases the floppy.
But yes, it was irritating at times when you are working on a multitude of files and then having to figure out which file came from the floppy.