Date: Mon, 20 Nov 2000 22:17:18 -0700 (MST) From: "Chad R. Larson" <chad@DCFinc.com> To: freebsd@gndrsh.dnsmgr.net (Rodney W. Grimes) Cc: imp@village.org, bfoz@glue.umd.edu, Cy.Schubert@uumail.gov.bc.ca, stable@FreeBSD.ORG, roelof@eboa.com Subject: Re: Dangerously Dedicated Message-ID: <200011210517.WAA08133@freeway.dcfinc.com> In-Reply-To: <200011202023.MAA19454@gndrsh.dnsmgr.net> from "Rodney W. Grimes" at "Nov 20, 0 12:23:02 pm"
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As I recall, Rodney W. Grimes wrote: > The original IBM AT spec could give a rats ass about a partition > table, all that it cares about is the boot block signature (magic > 0xAA55). It is the MBR that knows what a partition table is and how > to deal with it. The original spec says if there is a valid > signature, load the code and jump to it passing the drive number in > reg dl so that the boot code knows where it was loaded from. It was > up to the MBR to decide what to do from then on. I think earlier in this thread was a reference to a document somewhat later than the BIOS code shipped with an AT. Do we want to start a new thread on what exactly =is= the authoritative documentation for PC architecture? The real issue is FreeBSD has to be able to boot on the hardware that's in the stores. Who's wrong, though interesting, doesn't matter. -crl -- Chad R. Larson (CRL15) 602-953-1392 Brother, can you paradigm? chad@dcfinc.com chad@larsons.org larson1@home.net DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254-2207 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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