From owner-freebsd-geom@FreeBSD.ORG Sat Jun 9 21:43:05 2007 Return-Path: X-Original-To: freebsd-geom@freebsd.org Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id B6D2C16A421; Sat, 9 Jun 2007 21:43:05 +0000 (UTC) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by mx1.freebsd.org (Postfix) with ESMTP id 5509113C45A; Sat, 9 Jun 2007 21:43:05 +0000 (UTC) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (localhost [127.0.0.1]) by apollo.backplane.com (8.13.8/8.13.7) with ESMTP id l59LSjcA027672; Sat, 9 Jun 2007 14:28:45 -0700 (PDT) Received: (from dillon@localhost) by apollo.backplane.com (8.13.8/8.13.4/Submit) id l59LSjRs027671; Sat, 9 Jun 2007 14:28:45 -0700 (PDT) Date: Sat, 9 Jun 2007 14:28:45 -0700 (PDT) From: Matthew Dillon Message-Id: <200706092128.l59LSjRs027671@apollo.backplane.com> To: Marcel Moolenaar References: <4AB3C4C0-0DA1-482F-A4CD-375A53332F29@mac.com> <4D7CDA24-48FE-4319-A320-C8D7165E9EBC@mac.com> Cc: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org, Ivan Voras , freebsd-geom@freebsd.org Subject: Re: GPT - (last) call for action X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Jun 2007 21:43:05 -0000 I'm having to tackle this issue right now in DFly. With GPT having to start at sector 1 (no choice there), the compatible MBR in sector 0 presumably must have a slice (#1) which covers the entire disk. But do we have to make slice #1 bootable? Could we also create a slice #2 in the MBR that points into the GPT's first partition, mark it bootable, and thus be able to put boot1 in the GPT's first partition? Or will the BIOS fart on the overlapping MBR slices? -Matt