From owner-freebsd-stable@freebsd.org Sat Dec 17 08:21:24 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 0A3C2C81421 for ; Sat, 17 Dec 2016 08:21:24 +0000 (UTC) (envelope-from elferdo@gmail.com) Received: from mail-io0-x234.google.com (mail-io0-x234.google.com [IPv6:2607:f8b0:4001:c06::234]) (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 D0DE413E6; Sat, 17 Dec 2016 08:21:23 +0000 (UTC) (envelope-from elferdo@gmail.com) Received: by mail-io0-x234.google.com with SMTP id h30so116240795iod.2; Sat, 17 Dec 2016 00:21:23 -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=r0g+GCMwTnDgmUFUXZeT9NnJxrdKPxnbMrQd6C7CW7E=; b=mjttoZ/H9ggOA394OrCNC6UDRKAhem/S0kVr5pwE5wCEIcjrjsHymz/9rimwTXHMe8 JThU69NPqjTnL1QYO2cZubbZyEkTxn5K6g75DvQL6El1UG28Cbg+IAJgdvKAKQ/RXIEq uMZVYKfwuBFUQtq+W3AeO+P+6jOTIAdmg7oDQFCR4G1evzDtojXv41QqAzgxPPPkEbKb XkoYXECQwui0j3Gr0a/agqnkISdFCLCnqzpoycWlwhvbqO6Bu7ZQkExtG1iRNT9zGXXh oGqcL7hX8JnF9//kbVuaExp0EpW3x5hSdxPUcCv/qSCPlMtQK0ob65mnTwol9uz8dCrN Nz2w== 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=r0g+GCMwTnDgmUFUXZeT9NnJxrdKPxnbMrQd6C7CW7E=; b=G2w8r8zXXg9wAhUAbtHmifcFulYp06CAayofo9WEiqE91v9jL8UWApH/bYB0h/gbkw KE3mcTDXmTgIsKGyCeE8yXmwoHCF8a8czLA1MtIKrQbGtWJz0gE5Oa383w5THhAPZN0N piSaoeGstWSUwMj9ov7dS+v47O1MQviqyvCHHcEEa57A0QyGDNQAVbRUEkJMsE//kIYx VA2Xc6KeyqxWX+p8N9seIUNyGHB7QN7A9mqYZJLnOvN99WUhfT+/Awl/xq8BNNfa5Pro asP90ZwJP7aoSec7K6/6RWafRmZx82c5DzYRc2F2SiEle7hCPpJnoyw6qbKKdGU0ApZG RsoA== X-Gm-Message-State: AIkVDXJPoq/2Ljwea36eGkdpgb5lEdF9gTB0+NI41iwotHkKhd5HZMKI6E9AVGQNBl5gOqxh1F9lwfEWy6QvfA== X-Received: by 10.107.134.136 with SMTP id q8mr6560288ioi.82.1481962883185; Sat, 17 Dec 2016 00:21:23 -0800 (PST) MIME-Version: 1.0 Received: by 10.36.43.67 with HTTP; Sat, 17 Dec 2016 00:21:22 -0800 (PST) In-Reply-To: References: <20161216173930.GD90401@zxy.spb.ru> <85F3F813-D821-439B-B700-DCE51C53E035@FreeBSD.org> From: =?UTF-8?Q?Fernando_Herrero_Carr=C3=B3n?= Date: Sat, 17 Dec 2016 09:21:22 +0100 Message-ID: Subject: Re: Upgrading boot from GPT(BIOS) to GPT(UEFI) To: Warner Losh Cc: Dimitry Andric , Antony Uspensky , Eric van Gyzen , freebsd-stable , Slawa Olhovchenkov Content-Type: text/plain; charset=UTF-8 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 08:21:24 -0000 2016-12-16 23:56 GMT+01:00 Warner Losh : > On Fri, Dec 16, 2016 at 11:00 AM, Dimitry Andric wrote: > > On 16 Dec 2016, at 18:53, Antony Uspensky wrote: > >> > >> On Fri, 16 Dec 2016, Eric van Gyzen wrote: > >>> On 12/16/2016 11:39, Slawa Olhovchenkov wrote: > >>>> On Fri, Dec 16, 2016 at 06:08:34PM +0100, Fernando Herrero Carr?n > wrote: > >>>>> Hi everyone, > >>>>> > >>>>> A few months ago I got myself a new box and I have been happily > running > >>>>> FreeBSD on it ever since. I noticed that the boot was not as fast as > I had > >>>>> expected and I've realized that, while my disk is GPT partitioned, > the boot > >>>>> process is still BIOS based: > >>>>> > >>>>> % gpart show > >>>>> => 34 976773101 ada0 GPT (466G) > >>>>> 34 6 - free - (3.0K) > >>>>> 40 1024 1 freebsd-boot (512K) > >>>>> 1064 984 - free - (492K) > >>>>> 2048 67108864 2 freebsd-swap (32G) > >>>>> 67110912 909662208 3 freebsd-zfs (434G) > >>>>> 976773120 15 - free - (7.5K) > > ... > >> I would shrink ada0p1 down to 128K (size of gptzfsboot = 88K now) and > place efi partition (~800K) on free space between new p1 and p2. No need to > touch swap partition. > > > > Yes, this is almost exactly what I have done on a machine that was > > originally installed with gptzfsboot on the first partition, which was > > 512K. Since all the partitions on this SSD were aligned to 1M, I > > reduced the size of the first partition to 224K, freeing up a hole of > > exactly 800K for an EFI partition: > > > > => 40 976773088 ada0 GPT (466G) > > 40 2008 - free - (1.0M) > > 2048 448 1 freebsd-boot (224K) > > 2496 1600 4 efi (800K) > > 4096 33554432 2 freebsd-swap (16G) > > 33558528 943214592 3 freebsd-zfs (450G) > > 976773120 8 - free - (4.0K) > > > > Then I wrote the preformatted boot1.efifat image to it, using: gpart > > bootcode -p /boot/boot1.efifat -i 4 ada0. You can also use dd of > > course, but I prefer using gpart for these kinds of manipulations. > > > > This way, you can choose between booting in old school BIOS mode, or > > UEFI mode. If the UEFI mode works flawlessly, you can always decide > > later to dump the freebsd-boot partition, and use only an EFI partition. > > > > -Dimitry > > > > P.S.: The only thing that triggers my OCD here is that the EFI partition > > has index 4, but is physically the second. But I can live with that, > > until I finally delete the freebsd-boot partition. :) > > > You likely want to carve out more like 50MB instead of 800k for UEFI > partition. 800k is the minimum, but it also precludes many things you > may need to do with UEFI applications down the line. > > Warner > Thanks guys for all the answers, I think I will just nuke freebsd-boot and create a smallish efi where I can place boot1.efifat as suggested by Dimitry. If this works, I can always shrink swap if I really need to later on. Just out of curiosity, what other functionality will UEFI provide that takes up 50M? Best regards, Fernando