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Date:      Tue, 22 Dec 2009 12:48:10 +0100
From:      =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To:        "James R. Van Artsdalen" <james-freebsd-current@jrv.org>
Cc:        Ollivier Robert <roberto@keltia.freenix.fr>, freebsd-current@freebsd.org
Subject:   Re: Some notes on RootOnZFS article in wiki
Message-ID:  <867hsf6xhh.fsf@ds4.des.no>
In-Reply-To: <4B2F9877.70201@jrv.org> (James R. Van Artsdalen's message of "Mon, 21 Dec 2009 09:47:03 -0600")
References:  <200912210600.46044.mel.flynn%2Bfbsd.current@mailing.thruhere.net> <20091221150514.GB75616@roberto-al.eurocontrol.fr> <4B2F9877.70201@jrv.org>

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"James R. Van Artsdalen" <james-freebsd-current@jrv.org> writes:
> Ollivier Robert <roberto@keltia.freenix.fr> writes:
> > On modern machines, system will boot from the GPT "freebsd-boot"
> > partition w/o having it active
> A correctly-written PC BIOS does not even look at (or for) a partition
> table of any sort when booting.  That's been the case for a
> quarter-century.   A system that does not boot without the active bit
> set is buggy, not new vs. old.

Wrong, wrong, wrong.

Some MBRs look for the active bit, some don't.  It doesn't mean they're
buggy; it's a design decision.  FWIW, ours does.

Some BIOSes *do* read the partition table; there was an issue some years
ago with ThinkPads that froze at boot if you installed FreeBSD on them
because they misidentified the FreeBSD partition as a suspend-to-disk
partition.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no



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