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Date:      Thu, 10 Dec 2015 12:41:15 +0000
From:      Steven Hartland <steven@multiplay.co.uk>
To:        krad <kraduk@gmail.com>
Cc:        "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>,  FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: ZFSROOT UEFI boot
Message-ID:  <8991747525093115430@unknownmsgid>
In-Reply-To: <CALfReyeY3=L9O81AX7xMKj3Ai2DTvBpXtbqepTZc2+GEsrT3vA@mail.gmail.com>
References:  <CALfReyeY3=L9O81AX7xMKj3Ai2DTvBpXtbqepTZc2+GEsrT3vA@mail.gmail.com>

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Ive literally just got this working on 10.2 after working on the code
posted on the review which you can find here:
https://reviews.freebsd.org/D4104

If you're happy running current then the patch file I linked in my comment
should apply cleanly and just work.

If you want 10.x then there's quite a bit more needed. As I said I do have
this working so can post patches when I'm back in the office.

Either way once applied a standard efi install just works. Essentially
create efi partition and use gpart to install the efi bootcode and away you
go.

I've just used this with a custom mfsbsd iso to perform and 10.2-RELEASE
ZFS boot install on some Intel nvme disks setup as raidz2, which only
support efi boot.

On 10 Dec 2015, at 12:18, krad <kraduk@gmail.com> wrote:

Hi, I need to get one of my machines converted over from bios GPT zfsroot
boot to efi. I know you can boot freebsd under EFI with a ufs kernel but
this isnt the route i want. There are patches under test for EFI zfs root.
However when I read the thread it was unclear which version of these
patches were needed and where to get them. Does anyone know where they are,
if there are any prebuilt zfsloader etc binaries, or if the patches have
made it to head yet?

Also does anyone have any pointers or good experience with grub efi and zfs
on root? I'm considering this option as it would make booting into specific
boot environments easier
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