BTX HALTED boot fail on sun fire 4140.

[Zaphod Beeblebrox]

The Sun Fire 4140 is a dual opteron machine.  I'm getting BTX Halted and a
processor register dump right after it prints the /boot/config -Dp (nothing
else printed).

Is there any value in trying the -current boot files to boot the 10.3
host?  Are they newer?

This happened as I tried to move the drives from an older failing host into
the sun.

The sun will boot a CD/DVD.  Can I make a DVD that will boot zfs on hard
drives?