I installed PC-BSD AMD64 on my computer. The computer has a motherboard ethernet subsystem that isn't supported by PCBSD, and the driver for that ethernet subsystem required me to recompile my Kernel. I was able to do that succesfully, with a little hitch. Now when I boot PCBSD the boot sequence gets to the point that the command mountroot> comes up. I have to type in ufs:ad6s4a at the prompt, hit enter, and the computer will boot up.
My question is, how do I configure the computer to find root during the boot sequence so I don't have to manually do it?