ok nvalias cdrom <device-path>
ok reset

you can get the device-path from the probe-scsi command, it's something
like /pci.......
boot cdrom1 (From Netra t1 Model 105 Release Notes page 3!)
=========================================== OpenBoot PROM
DEC -- > HEX conversion
ok d# 172 .
ac
=========================================== console
------------------------------- prevent break
4.7k ohm resistor between the Sun's pin 3 and pin 25
------------------------------- boot in 32 bit mode:
ok setenv boot-file /kernel/unix
ok boot
/platform/sun4u/kernel/unix and
/platform/sun4u/kernel/sparcv9/unix
------------------------------- 
useradd -u 1009 -g 10 -d /export/home/user -c "User" user