From owner-freebsd-stable@FreeBSD.ORG  Sun Aug 25 20:43:11 2013
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Date: Sun, 25 Aug 2013 20:43:11 +0000
To: Thomas Mueller <mueller6724@bellsouth.net>
Subject: Re: Change in loader or kernel: won't boot with kfreebsd in grub2
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From: nox@FreeBSD.ORG (Juergen Lock)
Cc: "Andrey V. Elsukov" <ae@FreeBSD.org>, freebsd-stable@freebsd.org,
 Juergen Lock <nox@FreeBSD.ORG>
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On Sat, Aug 24, 2013 at 08:53:31PM -0700, Thomas Mueller wrote:
> Some updates:
> 
> I could see what happens if I try to boot the FreeBSD boot partition on the hard drive using the Super Grub Disk with chainloader.
> 
> If that works, it would boot FreeBSD 9.0-BETA1, but I would see if it works.
> 
> That failed (invalid signature).
> 
You probably need to chainload a freebsd-boot partition, _if_ you
want to chainload at all.

> I could also try
> kfreebsd /boot/kernel/kernel
> 
> That failed to boot the proper partition, went to the debugger (db>), whereupon all I could type was "reboot".
> 
 You didn't get a mountroot prompt?  If you did you can try typing a
question mark and return, that should list possible partitions to mount
root from.  If you didn't, or you don't want to do this manually you
need to set kFreeBSD.vfs.root.mountfrom=ufs:/dev/ada0p1 from grub2,
or wherever your root partition is.

> Now can I safely install boot into the partition to be booted, as I did with NetBSD on USB stick?
> 
> gpart -p /boot/boot -i 3 
> 
> That would be for /dev/ada0p3, but I am afraid of damaging something.
> 
 That would need to be on a freebsd-boot partition, and you want
/boot/gptboot not /boot/boot.

> Tom
> 
 HTH,
	Juergen