Date: Fri, 16 Dec 2016 20:53:57 +0300 (MSK) From: Antony Uspensky <uspensky@x-art.ru> To: Eric van Gyzen <vangyzen@FreeBSD.org> Cc: Slawa Olhovchenkov <slw@zxy.spb.ru>, =?ISO-8859-15?Q?Fernando_Herrero_Carr=F3n?= <elferdo@gmail.com>, freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Upgrading boot from GPT(BIOS) to GPT(UEFI) Message-ID: <alpine.BSF.2.00.1612162047120.13320@gw-old.x-art.ru> In-Reply-To: <b9ede396-2a86-8319-2f40-fe1c40cc6483@FreeBSD.org> References: <CAMwkeZznenmN1RkUaKZ7i12F0FA185ZH%2BcHPXUp56S8j3SrubQ@mail.gmail.com> <20161216173930.GD90401@zxy.spb.ru> <b9ede396-2a86-8319-2f40-fe1c40cc6483@FreeBSD.org>
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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 am reading uefi(8) and it looks like FreeBSD 11 should be able to boot >>> using UEFI straight into ZFS, so I am thinking of converting that >>> freebsd-boot partition to an EFI partition, creating a FAT filesystem and >>> copying /boot/boot.efi there. >>> >>> How good of an idea is that? Would it really be that simple or am I missing >>> something? My only reason for wanting to boot with UEFI is faster boot, >>> everything is working fine otherwise. >>> >>> Thanks in advance for your help. >> >> I am also interesting by this case. >> I think expand freebsd-boot to about 1M (size of /boot/boot1.efifat), >> dding /boot/boot1.efifat and set to type to 'efi' may be enough. I am >> never tried this. > > I expect that would work. It's slightly risky, though, since it doesn't let you > fall back to BIOS boot if EFI doesn't work. > > Eric 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. A.
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