5.4R Sparc64 install hang

[Jeffrey Williams]

I am attempting to install the 5.4 Sparc64 release from cd on an Ultra
2, with dual 200mhz ultra sparc cpus, but it hangs, apparently when
trying to load the kernel.  Following is the output:

(Begin output)

{0} ok boot cdrom
Boot device: /sbus/SUNW,fas at e,8800000/sd at 6,0:f  File and args:

  >> FreeBSD/sparc64 boot block
     Boot path: /sbus at 1f,0/SUNW,fas at e,8800000/sd at 6,0:f
     Boot loader: /boot/loader
Console: Open Firmware console
Boot path set to /sbus at 1f,0/SUNW,fas at e,8800000/sd at 6,0:a

FreeBSD/sparc64 bootstrap loader, Revision 1.0
(r... at binkley.cse.buffalo.edu, Sun May 8 07:16:15 UTC 2005)
bootpath="/sbus at 1f,0/SUNW,fas at e,8800000/sd at 6,0:a"
Loading /boot/defaults/loader.conf
/boot/kernel/kernel data=0x3d8908+0x47c78 syms=[0x8+0x50b80+0x8+0x45260]
/
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
nothing to autoload yet.
jumping to kernel entry at 0xc0040000.

(End output)

Any suggestions would be appreciated.

Thanks
Jeff