doppio:devices $ su root -c ' format < /dev/null'
Password:
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c2d0 <DEFAULT cyl 14894 alt 2 hd 64 sec 63>
          /pci@0,0/pci10de,ed@e/pci-ide@d/ide@0/cmdk@0,0
Specify disk (enter its number):
doppio:devices $ grep bootpath /boot/solaris/bootenv.rc
setprop bootpath /pci@0,0/pci10de,ed@e/pci-ide@d/ide@0/cmdk@0,0:a


notice how the line from format's output matches the bootpath property