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Date:      Sat, 17 Dec 2016 15:28:21 +0000
From:      Brandon Allbery <allbery.b@gmail.com>
To:        =?UTF-8?Q?Fernando_Herrero_Carr=C3=B3n?= <elferdo@gmail.com>
Cc:        Ian Smith <smithi@nimnet.asn.au>, freebsd-stable <freebsd-stable@freebsd.org>
Subject:   Re: Upgrading boot from GPT(BIOS) to GPT(UEFI)
Message-ID:  <CAKFCL4V_JRfYFDv8wvv=9wQgntWe15-CbvF6_Nb9rANWnGh51Q@mail.gmail.com>
In-Reply-To: <CAMwkeZz9d%2BrSzjis%2BWcjY_pPUBbwFiX0jiKMv5hCj_ekA4_G7A@mail.gmail.com>
References:  <CAMwkeZznenmN1RkUaKZ7i12F0FA185ZH%2BcHPXUp56S8j3SrubQ@mail.gmail.com> <20161217170412.V26979@sola.nimnet.asn.au> <CAMwkeZz9d%2BrSzjis%2BWcjY_pPUBbwFiX0jiKMv5hCj_ekA4_G7A@mail.gmail.com>

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On Sat, Dec 17, 2016 at 8:25 AM, Fernando Herrero Carr=C3=B3n <elferdo@gmai=
l.com>
wrote:

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


Actually, they boot through a legacy 16 bit path, with access to only the
first 1MB of RAM until they can initialize native mode.

--=20
brandon s allbery kf8nh                               sine nomine associate=
s
allbery.b@gmail.com                                  ballbery@sinenomine.ne=
t
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.ne=
t



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