can't boot ISO image CD FreeBSD 9.1 on Sun Blade 1000

[Riccardo Veraldi]

Hello,
I cannot boot the 9.1 ISO image on SunBlade 1000.
both disc1 and bootonly fails

can't load 'kernel'


at the boot loader OK prompt if I issue a ls command I only see the boot 
directory


d boot

inside /boot there is only the loader file and no other files, this is 
really weird because
mounting the ISO image CD on another computer I can see all the files 
are there.

there is no /boot/kernel/kernel file...

MD5 checksums are ok.

any hint about this ?

thank you

Rick