Date: Thu, 4 Feb 2016 21:14:42 +0000 From: krad <kraduk@gmail.com> To: Arthur Chance <freebsd@qeng-ho.org> Cc: "Brandon J. Wandersee" <brandon.wandersee@gmail.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Switch from legacy to UEFI boot?? Message-ID: <CALfReycVbdW_0q0GT73uK1zW29b5fs7m98%2B1nUmWW=VCvwLRRw@mail.gmail.com> In-Reply-To: <56B38299.7030800@qeng-ho.org> References: <20160203213414.GB60231@rancor.immure.com> <alpine.BSF.2.20.1602040842580.1065@mail.fig.ol.no> <56B353E5.9080605@fechner.net> <alpine.BSF.2.20.1602041447560.1065@mail.fig.ol.no> <86k2mk7cmz.fsf@WorkBox.Home> <56B38299.7030800@qeng-ho.org>
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*you will need a small efi partition on the b*oot drive. You should still
have the option to bios boot as well.
here is a layout from one of my systems. You can see I trimmed the space
from swap
$ gpart show ada0
=> 34 117231341 ada0 GPT (56G)
34 1024 1 freebsd-boot (512K)
1058 6 - free - (3.0K)
1064 262144 2 efi (128M)
263208 3932154 4 freebsd-swap (1.9G)
4195362 113036013 3 freebsd-zfs (54G)
On 4 February 2016 at 16:55, Arthur Chance <freebsd@qeng-ho.org> wrote:
> On 04/02/2016 14:50, Brandon J. Wandersee wrote:
>
>>
>> Trond Endrestøl writes:
>>
>> On Thu, 4 Feb 2016 14:36+0100, Matthias Fechner wrote:
>>>
>>>>
>>>> is it true that currently the EFI loaded cannot boot a ZFS root?
>>>>
>>>
>>> As of r294999, stable/10's boot1.efi and loader.efi is able to boot
>>> ZFS. Both boot1.efi and loader.efi takes the bootfs property into
>>> consideration... Maybe you should wait until the next stable/10
>>> snapshot is available...
>>>
>>
>> The ZFS-compatible EFI loader is expected to be ready for 10.3-RELEASE,
>> which is scheduled for about six weeks from now.[1] It may be a bit more
>> or less time than that, depending on how things go, but the first beta
>> snapshot of 10.3 (which is cut from 10-STABLE) is set to be built
>> tomorrow. If you don't want to run a development branch, you won't have
>> much longer to wait. Though once that change happens, you'd have to back
>> up your data and reconfigure your boot scheme to make use of
>> ZFS-compatible UEFI booting.
>>
>> [1]: https://www.freebsd.org/releases/10.3R/schedule.html
>>
>>
> I currently have a pure ZFS system with boot environments which I
> currently boot using BIOS compatibility mode. Will I just be able to switch
> to UEFI boot under 10.3? Is the EFI loader smart enough to find boot
> environments for itself, or do we have to flag them in some fashion?
>
> --
> Moore's Law of Mad Science: Every eighteen months, the minimum IQ
> necessary to destroy the world drops by one point.
>
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