I am not sure what you mean by system friendly disks, but it will not read Amiga floppies, if that is what you meant. It will read Mac floppies when running a MacOS and it will read MSDOS floppies when running the later versions of MacOS.
As for reading Amiga hdd's, same answer as Amiga floppies, unless you can get an Amiga emulator, like EUAE to see the USB connected hdd, then maybe, but I doubt it.
