Cannot mount / when booting from disk

[walt]

Francois Tigeot wrote:
> Hi,
> 
> I have recently tried to install Dragonfly-1.6 on a SATA based machine
> (Asus A8V-E-SE, VIA 8237 chipset, 74 GB Raptor). Everything went fine
> during the installation.
> 
> When booting from the hard disk, the kernel is unable to mount /
> 
> Here are the most important error messages (recopied by hand, they may not
> be completely accurate) :
> 
> 	Mounting root from ufs:/dev/ad4s1a
> 	ad4: cannot find label (no disk label)
> 	ad4s1: cannot find label (no disk label)
> 	Root mount failed: 22

Is your kernel recognizing the SATA controller (dmesg)?  Are you
using the same kernel on the hard disk as on the CD?