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Date:      Wed, 13 Sep 2000 04:50:50 -0700 (PDT)
From:      andrewo@gblx.net
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   i386/21249: BTX halted with dedicated disks/Adaptec 2940U2W
Message-ID:  <20000913115050.0F6A537B424@hub.freebsd.org>

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>Number:         21249
>Category:       i386
>Synopsis:       BTX halted with dedicated disks/Adaptec 2940U2W
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Sep 13 05:00:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Andrew Ohnstad
>Release:        4.1-Release
>Organization:
>Environment:
Adaptec 2940U2W with Ultra2 Disc as ID 0 (booting) and 4 Ultra drives.  
ASUS P5A Motherboard, Award Bios 4.51PG.  Asus P5A ACPI BIOS Revision 1006.
Adaptec SCSI Bios 2.20.0
>Description:
System was installed with single Ultra2 Disc at unit 0 using installer and "dangerously dedicated mode"
Later 4 discs were added using the following procedure:
 dd if=/dev/zero of=/dev/rda1 count=2
 disklabel /dev/rda1 | disklabel -BrR da1 /dev/stdin
 newfs /dev/rda1c
With these new dangerously dedicated discs the system refuses to boot with the 4 new drives attached to the system.  The following is displayed immediatley after the PC Bios.
(leading zeros removed)
int=0	  err=0    efl=30246   eip=1b54
eax=0     ebx=38e  ecx=0       edx=0
esi=9ebe  edi=1a3e ebp=396     esp=38a
cs=c800   ds=40   es=93b3   fs=0   gs=0   ss=9ebe
cs:eip=f7 f1 33 d2 8a 4e f6 f7-f1 3d ff 03 76 03 b8 ff
ss:esp=00 00 3f 00 00 00 00 00-00 00 02 00 df 09 00 c8
BTX Halted
>How-To-Repeat:
Reboot, remove dedicated drives from chain or remove partition information.

>Fix:
None

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


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