To boot from CD, you can specify the path a couple of ways. You could type bo p4 (boot path number 4). For the masochistic, bo 0/0/2/1.2 will work (boot from device path 0/0/2/1.2). Take the easy way, bo p4. It will ask if you want to interact with IPL, usually you can say no.

Main Menu: Enter command or menu > bo p4
Interact with IPL (Y, N, or Cancel)?> n

Boot IO Dependent Code (IODC) revision 1


HARD Booted.

ISL Revision A.00.43  Apr 12, 2000

Booting...
: disk(0/0/2/1.2.0.0.0.0.0;0):INSTALL
10244096 + 1761280 + 2106632 start 0x1fe0e8			
		    

This is a good sign. The Initial System Loader (ISL) found a bootable slice, and is booting.