EFI and GPT status

Warren Block wblock at wonkity.com
Wed Jul 20 02:34:56 UTC 2016

On Tue, 19 Jul 2016, Ben Woods wrote:

> On Tuesday, 19 July 2016, Fernando Apesteguía <fernando.apesteguia at gmail.com>
> wrote:
>> Hi,
>> What's the status of EFI and GPT support on FreeBSD? I would like to triple
>> boot windows 10 + FreeBSD 10 + Linux everything installed on a single disk.
>> Is it possible?
>> If not with GPT, would it be better to fall back to compatibility mode and
>> MBR partition scheme?
>> Has anyone played with this?
>> Thanks in advance.
> I dual boot my laptop with Windows and FreeBSD using a single hard drive.
> I find the easiest way is creating 2 new GPT partitions (1 for ZFS and 1
> for swap). I then manually copy the FreeBSD EFI boot loader to my EFI
> partition, by mounting the existing EFI partition that comes with the
> laptop as msdosfs to /mnt, copying /boot/boot1.efi to
> /mnt/EFI/BOOT/BOOTX64.efi.
> Lastly, I install refind on my efi partition to allow me to select between
> the Windows EFI loader and the FreeBSD EFI loader at boot time.
> http://www.rodsbooks.com/refind/

I do a similar thing, but my UEFI Dell notebooks allow setting each EFI 
boot loader as a menu entry.  So no additional software is needed.

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