Sun Blade 100 boot failure

Hi all,

My Blade 100 is currently not booting giving the
error:

Boot Device: disk File and Args:
Boot load failed.
The file just loaded deos not appear to be
executable.

I have set autoboot to false and have OpenBoot
4.0 available. Diagnostics indicate the machine
is OK. Booting from CDROM (boot cdrom) fails too.

I’ve scratched around everywhere but have so far
come up empty handed. Does anyone have any idea
how I can get this machine back up again?

Ian