Syslinux - Mar 2009 - gpxelinux, chain.c32 and the freebsd bootloader

Hi there,

I have some troubles to boot a node with gpxelinux, chain.c32 and a
freebsd (version 7) bootloader installed on the /dev/sda3 part of my
node.

For information, it works fine with pxelinux.

In both cases, the version 3.73 of gpxelinux/pxelinux is used.

My PXE profile : 
DEFAULT bootlabel
label bootlabel
        KERNEL images_emmanuel/chain.c32
        APPEND hd0 3

The message I obtain on the node :
/boot/kernel/kernel text=0x72a328 data=0xed538+0x71b48
syms=[0x8+0xaa8f8+0x8+0x92fea] Consoles: internal video/keyboard
serial port BIOS drive C: is disk0
BIOS 548kB/2095488kB available memory

FreeBSD/i386 bootstrap loader, Revision 1.1
(root at gdx-48, Mon Jul 28 07:29:51 UTC 2008)
Can't work out which disk we are booting from.
Guessed BIOS device 0xffffffff not found by probes, defaulting to disk0:

Do you have any idea of the problem ?

Thanks,
Emmanuel.

Emmanuel Jeanvoine wrote:
> 
> The message I obtain on the node :
> /boot/kernel/kernel text=0x72a328 data=0xed538+0x71b48
> syms=[0x8+0xaa8f8+0x8+0x92fea] Consoles: internal video/keyboard
> serial port BIOS drive C: is disk0
> BIOS 548kB/2095488kB available memory
> 
> FreeBSD/i386 bootstrap loader, Revision 1.1
> (root at gdx-48, Mon Jul 28 07:29:51 UTC 2008)
> Can't work out which disk we are booting from.
> Guessed BIOS device 0xffffffff not found by probes, defaulting to disk0:
> 
> Do you have any idea of the problem ?
> 
Hm... "guessed BIOS device 0xffffffff" implies something pretty 
fundamentally broken, because the BIOS device is passed in via register 
DL, and should be an 8-bit number.

It sounds like the FreeBSD boot loader is making some kind of assumption 
here which isn't true, which either means I'm doing something wrong or 
they are.

As always, if you're not trying the latest version of Syslinux (3.73 or 
3.74-pre5) please do so; otherwise it would be useful if we could hear 
from the FreeBSD people what they expect.

	-hpa