We've never tested IWizard with OS9, so any issues are hardly a surprise. Likewise, booting from Firewire might work, might not. I'd try booting the OS from the OF command prompt first, forcing the boot partition like: boot boot.img BD=DH1 (where DH1 is where MorphOS is installed). If that works, you might need to add that BD=... to the bootinfo.txt on the MorphOS Boot: partition (don't forget to hfssetmacboot the file after saving it).