- So Is It useless the "yaboot.config" in this way ? and I don't need to worry about the "macosx=" variable ? (for using four OSX O.S.) or I need also to config the yaboot.config ?

Yes I can't use at the moment MorphOS with PowerMac FW800
or I can bootstrap with 2.5 cd-rom ?

I'll try to edit form Linux and then re-bless, ok, thanks