How to check HDD partno:

Hi Friends,

I am running true64unix in compaq ES40 server.
I am New to true64unix.

My question is how to check the partno: of HDD without changing the state of the server.

Is there any similar command of solaris like showfru or format there to check the partno.

Thanks N regards

file /dev/rrz0c or disklabel -p maybe?