Can I read my old floppy disks with OS4 on the AmigaOne?
No, the AmigaOne has a standard PC-style controller and will not
read standard Amiga format floppies. There is a piece of
hardware called the CatWeasel which will allow you to read these
if you need to, but will not magically make old non-installable
floppy-based games work. (NB: the OS4 pre-release does not
contain any support for floppy disk drives)