kernel can't find boot device ad

[walt]

On Sat, 26 Jan 2008, mustkaru wrote:

> Hi,
>
> I successfully installed Dragonfly on my laptop and compiled a new
> kernel. However, when booting the new kernel panics: can't find boot
> device 'ad' (root is on /dev/ad0s1a). There is no 'ad' in the list of
> devices recognized by kernel. ata0 appears in the boot messages
> though. The nata devices are all present in my kernel config file,
> precisely as in GENERIC. What might be wrong?

How far does the boot process go before the panic?  Do you see the
kernel enumerating all the hardware on the motherboard?  Can you
still boot the original GENERIC kernel okay?