Date: Sat, 17 Dec 2016 15:38:19 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Warner Losh <imp@bsdimp.com> Cc: Antony Uspensky <uspensky@x-art.ru>, =?utf-8?Q?Fernando_Herrero_Carr=C3=B3n?= <elferdo@gmail.com>, Eric van Gyzen <vangyzen@freebsd.org>, freebsd-stable <freebsd-stable@freebsd.org>, Slawa Olhovchenkov <slw@zxy.spb.ru> Subject: Re: Upgrading boot from GPT(BIOS) to GPT(UEFI) Message-ID: <2720DE76-B524-4AEA-ACC0-1EBD8813547D@FreeBSD.org> In-Reply-To: <CANCZdfpBVN%2BtuYkxE_OM9vfKHyxsMgywkPCZTmNz4O_nigp%2BJA@mail.gmail.com> References: <CAMwkeZznenmN1RkUaKZ7i12F0FA185ZH%2BcHPXUp56S8j3SrubQ@mail.gmail.com> <20161216173930.GD90401@zxy.spb.ru> <b9ede396-2a86-8319-2f40-fe1c40cc6483@FreeBSD.org> <alpine.BSF.2.00.1612162047120.13320@gw-old.x-art.ru> <85F3F813-D821-439B-B700-DCE51C53E035@FreeBSD.org> <CANCZdfpBVN%2BtuYkxE_OM9vfKHyxsMgywkPCZTmNz4O_nigp%2BJA@mail.gmail.com>
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--Apple-Mail=_164DED19-87CB-4F04-B762-CB39EE5D9962 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii On 16 Dec 2016, at 23:56, Warner Losh <imp@bsdimp.com> wrote: > > On Fri, Dec 16, 2016 at 11:00 AM, Dimitry Andric <dim@freebsd.org> wrote: ... >> 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: ... > 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. Well, this is the default boot1.efifat size. If you think 50MB is more reasonable, the boot1.efifat size should have a corresponding size. That said, as long as there are almost no such UEFI applications, I'm not bothering. Besides, even if there were, I don't have any interest in the UEFI "ecosphere" as-is. I see it as an ugly-but-necessary pre-bootloader environment only. -Dimitry --Apple-Mail=_164DED19-87CB-4F04-B762-CB39EE5D9962 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.30 iEYEARECAAYFAlhVTdsACgkQsF6jCi4glqNs9QCgqI+NxNslzQNvBHcnI/2G1MQr FgQAnj/JY0cw4nIjdwT837FhQyusaFG6 =7gHA -----END PGP SIGNATURE----- --Apple-Mail=_164DED19-87CB-4F04-B762-CB39EE5D9962--
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