System architecure does not support this option of this command.
prtconf: Defaulting to non-PROM mode...
System Configuration:  Sun Microsystems  sun4
Memory size: 56 Megabytes
System Peripherals (PROM Nodes):

System Peripherals (Software Nodes):

Sun SPARCsystem 300
    options, instance #0
    obio, instance #0
        esp, instance #0
            sd, instance #0
            sd, instance #1 (driver not attached)
            sd, instance #2 (driver not attached)
            sd, instance #3 (driver not attached)
            sd, instance #4 (driver not attached)
            sd, instance #5 (driver not attached)
            sd, instance #6 (driver not attached)
            sd, instance #7 (driver not attached)
        zs, instance #0
        zs, instance #1
        zs, instance #2
        le, instance #0
        eeprom, instance #0
        profile, instance #0
    vme, instance #0
        pn, instance #0
            ipi3sc, instance #0
                id, instance #0
                id, instance #1
                id, instance #2
                id, instance #3
                id, instance #4
                id, instance #5
                id, instance #6 (driver not attached)
                id, instance #7 (driver not attached)
        vmemem, instance #0
        vmemem, instance #1
        vmemem, instance #2
        vmemem, instance #3
        vmemem, instance #4
        vmemem, instance #5
    pseudo, instance #0