kern/42122: larger than 2TB drives can't be properly found at boot

[gendalia%netbsd.org@localhost]

>Number:         42122
>Category:       kern
>Synopsis:       larger than 2TB drives can't be properly found at boot
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep 24 21:00:00 +0000 2009
>Originator:     Tracy Di Marco White
>Release:        5.0.1
>Organization:
>Environment:
NetBSD blackhole 5.0.1 NetBSD 5.0.1 (GENERIC) #0: Thu Jul 30 01:39:11 UTC 2009  
builds%b8.netbsd.org@localhost:/home/builds/ab/netbsd-5-0-1-RELEASE/i386/200907292356Z-obj/home/builds/ab/netbsd-5-0-1-RELEASE/src/sys/arch/i386/compile/GENERIC
 i386

>Description:
sd2 at scsibus1 target 0 lun 0: <IFT, A16U-G2430, 348C> disk fixed
sd2: 512, 270286 cyl, 255 head, 0 sec, 512 bytes/sect x 1 sectors
sd2: sync (6.25ns offset 127), 16-bit (320.000MB/s) transfers, tagged queueing

It's an 8TB disk. 
>How-To-Repeat:
Attach a large raid array. boot.
>Fix: