Device aliases are useful in the BootPROM environment because they simplify the unwieldly device paths into simple terms like disk and net. There may be cause to create a new device alias on a system as when adding a new or alternate boot device.
Device aliases are created only in the BootPROM (ok prompt). If you want to add an alias for a disk with a path of /pci@1f,0/pci@1,1/ide@3/disk@0,0 use the nvalias command like this:
nvalias disknew /pci@1f,0/pci@1,1/ide@3/disk@0,0
BootPROM versions 3.25 and later support booting from the network. Creating a network device alias is similar as seen in the example below:
ok nvalias net /pci@1f,4000/network@2,1:dhcp
