From owner-freebsd-hackers@freebsd.org  Wed Oct 12 12:56:55 2016
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From: Peter Blok <pblok@bsd4all.org>
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Subject: UEFI boot filter
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Date: Wed, 12 Oct 2016 14:48:54 +0200
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My Asrock E3C224D4I-14S has a CSM option =E2=80=9CBoot option filter=E2=80=
=9D which allows me to show only devices that can boot with UEFI.

If it is set to UEFI and Legacy, FreeBSD boots fine over UEFI.

If I set it to UEFI only, the disk is not found.

I have Solaris 11.3 installed on a different disk and that one is listed =
as =E2=80=9CORACLE Solaris 11.3=E2=80=9D in the list of bootable =
devices, instead of the disk number and vendor id. FreeBSD doesn=E2=80=99t=
 show up in the list.

Does anybody know how this mechanism works and how to make it work for =
FreeBSD?

Peter=