URGENCY help install error on DELL R900

[wsk]

hello list,
get "Can't load kernel" error while trying to install FBSD_7.0R on DELL
R900.
/
lsdev
/cd devices:/
/cd0: Device 0x0/
/disk devices:/
disk0: Bios drive C:

ls /
get bad path

and it can load kernel successly
load cd0:/boot/kernel/kernel
boot -v get progressbar "| / \" and stopped

btw:
install SuSE linux or DragonflyBSD successly and check that it it nothing
to do with bios

help... and thanks with any reply.
/