From owner-freebsd-geom@FreeBSD.ORG Mon Mar 8 20:26:52 2010 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 64B5E106564A for ; Mon, 8 Mar 2010 20:26:52 +0000 (UTC) (envelope-from xcllnt@mac.com) Received: from asmtpout024.mac.com (asmtpout024.mac.com [17.148.16.99]) by mx1.freebsd.org (Postfix) with ESMTP id 4E3978FC0C for ; Mon, 8 Mar 2010 20:26:52 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii Received: from macbook-pro.jnpr.net (natint3.juniper.net [66.129.224.36]) by asmtp024.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KYZ005HBCS3BL20@asmtp024.mac.com> for freebsd-geom@freebsd.org; Mon, 08 Mar 2010 12:26:29 -0800 (PST) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=5.0.0-0908210000 definitions=main-1003080176 From: Marcel Moolenaar In-reply-to: Date: Mon, 08 Mar 2010 12:26:27 -0800 Message-id: <9556ADEF-E6B3-4235-9F17-B7CB5B249BA1@mac.com> References: To: Pete French X-Mailer: Apple Mail (2.1077) Cc: swhetzel@gmail.com, avg@icyb.net.ua, freebsd-geom@freebsd.org Subject: Re: another gpt vs mbr (sanity) check 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: Mon, 08 Mar 2010 20:26:52 -0000 On Mar 8, 2010, at 10:52 AM, Pete French wrote: >> The problem the original poster was having is this: >> >> Format drive as GPT >> Re-Format drive as MBR >> >> FreeBSD still sees the drive as GPT instead of MBR. > > Actually his *problem* is that FreeBSD sees the drive > a GPT, but other things now see it as MBR. If everything > saw it the same way there would be no issue, regardless > of what the spec says. But if eveyone sees it one way > and we see it another, thats not very useful, even if > it is strictly correct and all the others are wrong. We're already trying to play nice with mainstream OSes. We've simply reached the point where things ain't simple anymore and we need to be very careful not to break our own operating system. Remember that the PC world has only known about MBR and whatever people have been doing for 30 years suddenly isn't enough anymore because there's such a thing as GPT. -- Marcel Moolenaar xcllnt@mac.com