Switch from legacy to UEFI boot??

[krad]

*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 at 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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