The BlizzardPPCs and CyberstormPPC/MK3s supposedly have a CDFS in ROM (which I believe is the same CDFS used in MorphOS). There's some settings pertaining to it in the cards' boot menu (hold ESC when booting/rebooting). Maybe you can figure it out (I've never tried to). There's some slightly better documentation for that boot menu included in the FlashUpdate archives (see Aminet), maybe it'll help.
