To use a SunFDDI adapter interface as the boot device, perform the following tasks:
ok show-devs
The show-devs command lists the system devices. You should see the full path name of the pf or nf devices, similar to the following examples:
/pci@1f,2000/pci@2/pf@0,1
/sbus@1f,0/nf@1,7880
You need to select only one of these FDDI devices for booting.