External ADFS
ADFS no longer finds the hard drive, as it is looking for a controller at &FC40, which doesn't exist, so instead it selects the floppy disc drive.
As there is no hard drive available to ADFS, the first floppy drive is numbered zero. Previously when using XDFS with floppies, the drive number was 4, because it knew there was an XDFS-compatible hard drive attached as well.
