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Subject: [Bug 194359] bsdinstall should set active flag in GPT PMBR if not
 booting using EFI
Date: Wed, 15 Oct 2014 00:37:14 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194359

--- Comment #3 from Marcel Moolenaar <marcel@FreeBSD.org> ---
Indeed. The set attribute command was deliberately changed to apply not just to
partitions, but also to the scheme itself. This made it possible to to set the
active flag in the PMBR for the GPT scheme, even though GPT partitions
themselves do not have an active flag.

If the installer knows what the firmware is ((I don't know if we pass anything
from the loader to the kernel), then it can indeed set the active flag in PMBR
when the firmware is a BIOS and not do that when the firmware is (U)EFI. And
only do this on x86...

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