I don’t know, every Apple II that I ever used booted from floppy and had no hard disk unless you connected an external one.
Booted from memory (chip) but had no disk system by default. Later, the 143k externals came and to load the disk routines it did a little poke at the physical disk out from the memory. I programmed a lot for the little bugger back in 1980 or so. And I have a couple of old Elks stuffed away among around 500 old bootvir floppies in an archival box.