From owner-freebsd-stable@FreeBSD.ORG Mon Jan 22 00:10:10 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2E9BC16A401 for ; Mon, 22 Jan 2007 00:10:10 +0000 (UTC) (envelope-from bms@FreeBSD.org) Received: from out4.smtp.messagingengine.com (out4.smtp.messagingengine.com [66.111.4.28]) by mx1.freebsd.org (Postfix) with ESMTP id E949E13C44B for ; Mon, 22 Jan 2007 00:10:09 +0000 (UTC) (envelope-from bms@FreeBSD.org) Received: from out1.internal (unknown [10.202.2.149]) by out1.messagingengine.com (Postfix) with ESMTP id 5665B8CA1D; Sun, 21 Jan 2007 18:39:05 -0500 (EST) Received: from heartbeat1.messagingengine.com ([10.202.2.160]) by out1.internal (MEProxy); Sun, 21 Jan 2007 18:39:05 -0500 X-Sasl-enc: mMZPdLX94DPaNjCFvAQbslY5INvZOF/GgbkUuDrh0OxC 1169422745 Received: from [192.168.123.18] (82-35-112-254.cable.ubr07.dals.blueyonder.co.uk [82.35.112.254]) by mail.messagingengine.com (Postfix) with ESMTP id 14E1F14D9D; Sun, 21 Jan 2007 18:39:03 -0500 (EST) Message-ID: <45B3F996.8030303@FreeBSD.org> Date: Sun, 21 Jan 2007 23:39:02 +0000 From: "Bruce M. Simpson" User-Agent: Thunderbird 1.5.0.5 (X11/20060825) MIME-Version: 1.0 To: Peter Losher References: <45B2AAF8.9010509@isc.org> In-Reply-To: <45B2AAF8.9010509@isc.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org, jhb@freebsd.org Subject: Re: BTX issues when booting from a USB CD-ROM X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2007 00:10:10 -0000 Peter Losher wrote: > In both cases, once the USB CD-ROM started loading either 6.1 or 6.2, I > get a BTX halt: > Known issue. The btx code can't deal with BIOSes which want to enter protected mode to service the I/Os. USB support in most BIOSen generally does this. I see the same issue with FreeBSD's pxeboot and the PXE client in Etherboot. Regards, BMS