Hardware

I'm have a u5 with openbsd on it. I'm want to get opensolaris installed on it. I have the opensolaris cd, in the cdrom drive. At the ok prompt I type the follwing.

boot cdrom1 -s

witht the following results:

Boot device: /pci@1f,0/pci@1,1/ide@3/cdrom@2,0:f File and args: -s
Bad magic number in disk label
Can't open disk label package

Can't open boot device

_ _ _ _
Any ideas what the problem is? Thank you.