Change in loader or kernel: won't boot with kfreebsd in grub2

[Thomas Mueller]

Some updates:

I could see what happens if I try to boot the FreeBSD boot partition on the hard drive using the Super Grub Disk with chainloader.

If that works, it would boot FreeBSD 9.0-BETA1, but I would see if it works.

That failed (invalid signature).

I could also try
kfreebsd /boot/kernel/kernel

That failed to boot the proper partition, went to the debugger (db>), whereupon all I could type was "reboot".

Now can I safely install boot into the partition to be booted, as I did with NetBSD on USB stick?

gpart -p /boot/boot -i 3 

That would be for /dev/ada0p3, but I am afraid of damaging something.

Tom