mkimg used to create gpt image, problem booting

Marcel Moolenaar marcel at
Fri Aug 22 20:45:41 UTC 2014

On Aug 22, 2014, at 9:49 AM, Craig Rodrigues <rodrigc at> wrote:

> (5)  Tried to boot the image with qemu:
> qemu-system-x86_64 -m 2048 -hda /tmp/foo1.img


> If I mdconfig the foo1.img disk image, and do a gpart show, I see:
> =>      3  1784944  md0  GPT  (872M)
>        3       32    1  freebsd-boot  (16K)
>       35  1784912    2  freebsd-ufs  (872M)
> Any idea what I am doing wrong?

To the best of my knowledge, qemu is the thing you're
doing wrong :-)

I have so far not been able to boot an image created
by mkimg with a FreeBSD-hosted qemu.
o   VMware and VirtualBox are fine.
o   A non-FreeBSD hosted qemu also works fine.

If your host is running -current, make sure to set
MALLOC_CONF=junk:false. It improves behaviour on
FreeBSD for boot0/boo1.

HTH (probably not),

Marcel Moolenaar
marcel at

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