I just installed FreeBSD 4.7 on my AMD K6-2 200 (40GB IDE drive).

Everything went well up until I removed all the disks and rebooted; when
the bootloader came up it dumped a page of debug information at me and
informed me that BTX failed.

Did I set the wrong partition as bootable? I picked 'use all' and set the
FreeBSD partition to be bootable with the second option in the 'choose
bootloader' screen.

Any help would be much appreciated!
- rav

comp.unix.bsd.freebsd is not widely propagated, so you won't
necessarily get much help here.
See http://www.freebsd.org/support.html for better ideas...
[followups redirected accordingly]

Is that the only disk in the system?  
Do you have any other OS present?
If not, did you have a particular reason for installing a bootloader?

Does:

boot  -c /kernel

work?