amd64/105531: gigabyte GA-M51GM-S2G / nVidia nForce 430 - does not detect 3rd SATA Drive/Raid correctly

[Michael Kreykenbohm]

>Number:         105531
>Category:       amd64
>Synopsis:       gigabyte GA-M51GM-S2G / nVidia nForce 430 - does not detect 3rd SATA Drive/Raid correctly
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Nov 14 16:30:00 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Michael Kreykenbohm
>Release:        6.1
>Organization:
>Environment:
FreeBSD backtwo.ms.wkcorp.com 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Sun May  7 04:32:43 UTC 2006     root at opus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
The system is installed with 1 160GB SATA and 2 320GB SATAs, the Bios correctly discovers the drives in raid or non-raid mode, and pre install assigns drives A,C,D(E) correctly

When the On board raid is enabled, the system comes up with an ad4, ad8 and ar0 drives, and complains that the ar0 has no secondary drive. the ad8 should not be there.

when the on board raid is disabled, the system comes up with only the ad4 and ad8 regardelss of which channel the 3rd drive is on (even through the pre boot said there was a drive E)

I have not done a build yet, but also could not find any supporting information on this motherboard.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: