From owner-cvs-all Thu Oct 24 17:18:57 2002 Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1660437B401; Thu, 24 Oct 2002 17:18:56 -0700 (PDT) Received: from harmony.village.org (rover.bsdimp.com [204.144.255.66]) by mx1.FreeBSD.org (Postfix) with ESMTP id 72AF643E65; Thu, 24 Oct 2002 17:18:55 -0700 (PDT) (envelope-from imp@bsdimp.com) Received: from localhost (warner@rover2.village.org [10.0.0.1]) by harmony.village.org (8.12.3/8.12.3) with ESMTP id g9P0Irpk001089; Thu, 24 Oct 2002 18:18:54 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Thu, 24 Oct 2002 18:17:32 -0600 (MDT) Message-Id: <20021024.181732.07715741.imp@bsdimp.com> To: grog@FreeBSD.org Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/lib/libdisk Makefile chunk.c write_alpha_dis From: "M. Warner Losh" In-Reply-To: <20021025001556.GB53469@wantadilla.lemis.com> References: <20021024233323.GV53469@wantadilla.lemis.com> <20021024.180829.01187801.imp@bsdimp.com> <20021025001556.GB53469@wantadilla.lemis.com> X-Mailer: Mew version 2.1 on Emacs 21.2 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message: <20021025001556.GB53469@wantadilla.lemis.com> "Greg 'groggy' Lehey" writes: : On Thursday, 24 October 2002 at 18:08:29 -0600, M. Warner Losh wrote: : > In message: <20021024233323.GV53469@wantadilla.lemis.com> : > "Greg 'groggy' Lehey" writes: : >>> How about Adaptec SCSI BIOS's and other "smart" BIOS's that look : >>> at the MBR to guess what geometry you are using so that they can : >>> adjust their BIOS to DTRT? These choke if you don't have a valid : >>> MBR. : >> : >> They do? How do my -CURRENT machines work then? : > : > All FreeBSD disks have MBRs. The DD disks that some people use have : > them, they are just hidden from you. : : But they're not valid MBRs. They are valid MBRs from a data integrety point of view, but they are not the right from a describing the geometry of the actual disk point of view. These MBRs are known to screw up some disk controller's bioses. One, but not all, of my aha cards are like this... Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message