Upgrading boot from GPT(BIOS) to GPT(UEFI)

[Fernando Herrero Carrón]

2016-12-17 7:12 GMT+01:00 Ian Smith <smithi at nimnet.asn.au>:

> On Fri, 16 Dec 2016 18:08:34 +0100, Fernando Herrero Carrón wrote:
>  > Hi everyone,
>
> Hi,
>
> you've had plenty of helpful responses, but nobody has commented on:
>
>  > My only reason for wanting to boot with UEFI is faster boot,
>  > everything is working fine otherwise.
>
> I'm skeptical that UEFI boot would be any or noticeably faster than via
> BIOS, but am interested in hearing of any experiences regarding that.
>
> cheers, Ian
>

My understanding is that BIOSes still boot through kind of a legacy 32-bit
path and UEFI boots straight 64-bit with all the bells and whistles. In
fact:

% file /boot/loader
/boot/loader: FreeBSD/i386 demand paged executable
# Slow 32bit?


% file /boot/loader.efi
/boot/loader.efi: PE32+ executable (EFI application) x86-64, for MS Windows
# Fast 64bit?

Whether this amounts to faster boot, we'll see.

Cheers,
Fernando