From owner-freebsd-stable@freebsd.org Sat Dec 17 15:28:23 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 57112C8535E for ; Sat, 17 Dec 2016 15:28:23 +0000 (UTC) (envelope-from allbery.b@gmail.com) Received: from mail-io0-x236.google.com (mail-io0-x236.google.com [IPv6:2607:f8b0:4001:c06::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 139D73DA for ; Sat, 17 Dec 2016 15:28:23 +0000 (UTC) (envelope-from allbery.b@gmail.com) Received: by mail-io0-x236.google.com with SMTP id d9so121136449ioe.0 for ; Sat, 17 Dec 2016 07:28:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=DyNxblTGreToghtqAp1SVvmsQl4Anc/1JWvY4D7s1MU=; b=KUWSGAs/fTqPj1GSdMyzLH+VsMvy6cXhQog5iMQqQaq+PeS33Nn1plJOEvWjOz848M j6LH97doaaCnmhYz5HmwgEB9szFwqxqNX9o33LYZ/hmKnoCtziKm5QhuNhlvDyRtw3oJ bXVRrREtYjhzdOzypzqoem2Kj0evoe/06yuquRPMrPZwjguv8UVXqPkpq763TfF7Ib8H pSySRXSAw7hzxEXX1H9MqJMhMWg8AXMfKUQ9varcGsAOGyAsc/6UlCQOvSNg1ReIIFGd 5oCSE17NuH8pL+s9mPOSC1fNIjf9DPmqLh9vHpJfhLt8hPizx78uBC6+ujm4x27GphHQ ugAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=DyNxblTGreToghtqAp1SVvmsQl4Anc/1JWvY4D7s1MU=; b=oHzhBqvz9RTKn5OiI0MNvdI/G7YEm+fAkvC3AandDhXOjGUwag2nCxX0eF8aKfmDii U+fDP2uYcTWrliuDGWdGXKo/oQ5nkM3raHEpVAqFN6+bJLNN4H9pLhwEQHj3WZNuKeAD aUm/Lmp994DuFUl4VagOuvjH2wWM+MYnlR+qkJNlvNbqIGC02Zg0/4qESScL3ZWiO0DX Hczta725VO9TO6k5CKuQ2QKNbHnrRmnFrpcLbxxyu8fh06Z2fmyqk0hIMl0u97VdVsYF xG1JG1mg2WZ7AB2bl/j9S/LYvZMO1G20u3H4qzZspL/LZq+ccsF3Otc8cYTcKk2RbJzB F6Tw== X-Gm-Message-State: AIkVDXIvgkrgv1dnwPN/OiMvW5UV87LFggLVPqARhICjFNYxHJc55JxO4qbM1yfxW9kcoQgG3P7vJj7tSwf6bg== X-Received: by 10.107.58.67 with SMTP id h64mr8461906ioa.115.1481988502335; Sat, 17 Dec 2016 07:28:22 -0800 (PST) MIME-Version: 1.0 Received: by 10.36.192.67 with HTTP; Sat, 17 Dec 2016 07:28:21 -0800 (PST) In-Reply-To: References: <20161217170412.V26979@sola.nimnet.asn.au> From: Brandon Allbery Date: Sat, 17 Dec 2016 15:28:21 +0000 Message-ID: Subject: Re: Upgrading boot from GPT(BIOS) to GPT(UEFI) To: =?UTF-8?Q?Fernando_Herrero_Carr=C3=B3n?= Cc: Ian Smith , freebsd-stable Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Dec 2016 15:28:23 -0000 On Sat, Dec 17, 2016 at 8:25 AM, Fernando Herrero Carr=C3=B3n 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