1) What says Sun Device Detection Tool about your HW? 2) What says 'cat /etc/release' command?
and finally immediately first result give answer : http://www.google.com/#hl=en&source=hp&q=OpenSolaris+install+on+second+disk&aq=f&aqi=&oq=&fp=2755c6b3e9b2e9 -- This message posted from opensolaris.org