Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262013AbTINW3Y (ORCPT ); Sun, 14 Sep 2003 18:29:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262031AbTINW3Y (ORCPT ); Sun, 14 Sep 2003 18:29:24 -0400 Received: from pc1-cwma1-5-cust4.swan.cable.ntl.com ([80.5.120.4]:7073 "EHLO dhcp23.swansea.linux.org.uk") by vger.kernel.org with ESMTP id S262013AbTINW3X (ORCPT ); Sun, 14 Sep 2003 18:29:23 -0400 Subject: Re: 2.7 block ramblings (was Re: DMA for ide-scsi?) From: Alan Cox To: Matt Domsch Cc: Jeff Garzik , Linux Kernel Mailing List In-Reply-To: <20030913021117.GA16296@tux.linuxdev.us.dell.com> References: <3F64A5AC.8020901@pobox.com> <20030913021117.GA16296@tux.linuxdev.us.dell.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1063578413.2479.18.camel@dhcp23.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.4 (1.4.4-6) Date: Sun, 14 Sep 2003 23:26:54 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 712 Lines: 15 On Sad, 2003-09-13 at 17:11, Matt Domsch wrote: > system-unique disk signature to the boot disk (int13 device 80h) > "BOOT" or something - we've got 4 bytes available in the msdos label > for it int 13 is still available during the 16bit boot up phase of the kernel. It does strike me as playing with fire, but an alternative approach might work. Read the first 4K off the boot disk, stuff it somewhere temporary and then in 32bit compare it with the disk starts.. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/