NanoBSD don't boot.

[Peter Ankerstål]

I've found a pdf about installing NanoBSD on phk.freebsd.dk. Everything 
worked out quite well. Untill I tried to boot the CF card (I've had no 
problem booting a standard minimal install from the CF before.)  This is 
what I did:

* sh nanobsd.sh -c uchman.conf  ( http://pean.org/uchman.conf )
* dd if=_.disk.full of=/dev/ad4 bs=64kb (ad4 == my CF-card)

Everything seems to work fine but when I try to boot it just says:
\  (looks like it tries to load the kernel)
BTX loader 1.00 BTX version is 1.01
and then nothing.

I tried to boot the machine with a freebsd-installation and set the 
partitions bootable but
no success. What could have gone wrong?