Bootloader fails on initial install

[Ben Ragg]

Just tried installing FreeBSD from CD. All appears successful until 
booting for the first time

F1   FreeBSD

Default: F1

BTX loader 1.00  BTX version is 1.02
Consoles: internal video/keyboard
BIOS drive C: is disk0
BIOS
 640kb/490432kB available memory

FreeBSD/i386 bootstrap loader, Revision 1.1
(root at logan.cse.buffalo.edu, Thu Jan  1 09:55:10 UTC 2009)
str_buffer not found
Consoles: internal video/keyboard
BIOS drive C: is disk0
BIOS 640kB/490542kB available memory

FreeBSD/i386 bootstrap loader, Revision 1.1
(root at logan.cse.buffalo.edu, Thu Jan  1 09:55:10 UTC 2009)
Can't work out which disk we are booting from.
Guessed BIOS device 0xffffffff not found by probes, defaulting to disk0:

can't load 'kernel'

Type '?' for a list of commands, 'help' for more detailed help.
OK





Where on earth do I go from here?