From owner-freebsd-questions@FreeBSD.ORG Thu Nov 15 22:59:23 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id C3F901BC for ; Thu, 15 Nov 2012 22:59:23 +0000 (UTC) (envelope-from rfg@tristatelogic.com) Received: from outgoing.tristatelogic.com (segfault.tristatelogic.com [69.62.255.118]) by mx1.freebsd.org (Postfix) with ESMTP id 9EABD8FC08 for ; Thu, 15 Nov 2012 22:59:23 +0000 (UTC) Received: from segfault-nmh-helo.tristatelogic.com (localhost [127.0.0.1]) by segfault.tristatelogic.com (Postfix) with ESMTP id 32B0E5081D for ; Thu, 15 Nov 2012 14:59:23 -0800 (PST) To: freebsd-questions@freebsd.org Subject: Re: Advanced Format Drive ? In-Reply-To: Date: Thu, 15 Nov 2012 14:59:23 -0800 Message-ID: <26243.1353020363@tristatelogic.com> From: "Ronald F. Guilmette" X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Nov 2012 22:59:23 -0000 Warren, In the EXAMPLES section of the gpart(8) man page, they do this: /sbin/gpart bootcode -b /boot/pmbr ad0 In your document however, you first create an explicit (special) partition named "gpboot" and then you do this instead: gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 da0 Who is "right" in this case? I did the former, and did not get any error. The gpart(8) man page says: "... First, a protective MBR is embedded into the first disk sector from the /boot/pmbr image..." however it appears to me that the steps in your tutorial are effectively installing a copy of the /boot/pmbr file into block #40 of the disk. Yes? But isn't a copy of /boot/pmbr really supposed to end up in the first 512 bytes of the disk, i.e. block #0 ?