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Date:      Mon, 1 Jul 2002 22:45:14 -0400 (EDT)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        Chan Tur Wei <twchan@singnet.com.sg>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: dual booting current/stable on x86?
Message-ID:  <15649.5050.486714.104483@grasshopper.cs.duke.edu>
In-Reply-To: <20020702080738.Q19609-100000@zaapth.twnet.org>
References:  <15648.54278.323659.18641@grasshopper.cs.duke.edu> <20020702080738.Q19609-100000@zaapth.twnet.org>

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Chan Tur Wei writes:
 > 
 > I'm not sure how booting with lilo will work (never played with it).
 > 
 > Instead, I dug around a bit previously, and I found that boot1.s reads:
 > #
 > # If we are on a hard drive, then load the MBR and look for the first
 > # FreeBSD slice.  We use the fake partition entry below that points to
 > # the MBR when we call nread.  The first pass looks for the first active
 > # FreeBSD slice.  The second pass looks for the first non-active FreeBSD
 > # slice if the first one fails.
 > #
 > 
 > So unless someone specifically sets the active partition, the 1st FreeBSD
 > one, usually -stable, will get loaded.  Since boot1+boot2 is loaded by the
 > partition boot boot0, or the standard DOS boot (or, even MS's multi boot
 > selector), the above may cause the 2nd FreeBSD slice to never get loaded.
 > 
 > Incidentally, our booteasy (boot0.s) is one such someone.  Maybe if lilo
 > or liloboot does the same thing, it will work too.

Excellent.  Thanks for the pointer.  Now I at least have some
understanding of what's happening.

Drew

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