i386/137925: BTX loader hangs whe raid volume present

[Prentice Plucker]

>Number:         137925
>Category:       i386
>Synopsis:       BTX loader hangs whe raid volume present
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Aug 18 14:10:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Prentice Plucker
>Release:        7.2
>Organization:
>Environment:
Q35 chipset motherboard from Radisys with a 3ware 9650 raid controller intalled in the PCI Express x4 slot.
>Description:
The BTX loader hangs at bootup displaying nothing but the minus sign when I have the configured raid volume drives pluged into the raid controller. I am trying to boot from a SATA drive that is plugged into the motherboard and shows up as ad6. If I remove the drives from the 3ware controller boot works normally.

I installed an OS drive with BSD 6.4 loaded on it and the system booted up just fine with the raid drives installed. 
>How-To-Repeat:

>Fix:
Have not found one yet

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