FreeBSD 9.0-BETA2 memstick USB image hangs my BIOS

Hi all,

I've just tried to boot a FreeBSD-9.0 BETA2 (i386) memstick USB image
on my BIOS.

When inserted into a FreeBSD box (the one that I wrote it from), the
partition table has an MBR style partition setup with a single EFI
partition on it.

It however doesn't even get to the point where it fails to boot - it
hangs the BIOS at the startup screen, just after the memory probe.
This is normally where it'll print out the attached storage devices.
If I attach another USB stick with a normal DOS/FAT filesystem and
partition layout (the same model USB drive), the BIOS startup sequence
completes.

The motherboard is a Gigabyte G41MT-ES2L. The BIOS reports it as
"G41MT-ES2L F2".
The version string along the bottom is "12/01/2009-G41-ICH7-6a79PG03C-00".

Thanks,


Adrian


[adrian_at_pcbsd-3114]/data/freebsd/mips/if_ath_tx/src/sys/net80211(2434)%
fdisk da0
******* Working on device /dev/da0 *******
parameters extracted from in-core disklabel are:
cylinders=489 heads=255 sectors/track=63 (16065 blks/cyl)

parameters to be used for BIOS calculations are:
cylinders=489 heads=255 sectors/track=63 (16065 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 238 (0xee),(EFI GPT)
    start 1, size 1092019 (533 Meg), flag 80 (active)
        beg: cyl 0/ head 1/ sector 1;
        end: cyl 1023/ head 255/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>