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Date:      Wed, 17 Jun 2015 19:57:49 +0200
From:      "Bradley T. Hughes" <bradleythughes@fastmail.fm>
To:        Paul Kraus <paul@kraus-haus.org>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: ZFS booting from MBR Question
Message-ID:  <A5E50887-D190-4DC6-9EFD-A6E8AC813B36@fastmail.fm>
In-Reply-To: <5718BB29-A9E3-4551-807E-FB9575C1EA04@kraus-haus.org>
References:  <5718BB29-A9E3-4551-807E-FB9575C1EA04@kraus-haus.org>

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> On 17 Jun 2015, at 16:32, Paul Kraus <paul@kraus-haus.org> wrote:
> 
> I have not been able to find any documentation for how to write all the components of the boot loader for ZFS/MBR manually. Does someone here know what bsdinstall is doing under the covers ?
> 
> I am assuming the issue is the phase 1 boot loader on ada<n>s1 partition, but am not sure how to write that correctly, and I am afraid of overwriting the one good one I have.

I recently went looking for the same documentation. The zfsboot(8) manpage turned out to be what I wanted. It's not in 10.1-RELEASE, but you can find it in 10.1-STABLE:

https://www.freebsd.org/cgi/man.cgi?query=zfsboot&apropos=0&sektion=0&manpath=FreeBSD+10.1-stable&arch=default&format=html

There's instructions on how to install zfsboot(8) on whole disks (what I wanted) or MBR slices (what you want).

Hope that helps :)

--
Bradley T. Hughes
bradleythughes@fastmail.fm




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