From owner-freebsd-current@FreeBSD.ORG Tue Jun 1 16:55:02 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A9A731065675 for ; Tue, 1 Jun 2010 16:55:02 +0000 (UTC) (envelope-from xcllnt@mac.com) Received: from asmtpout029.mac.com (asmtpout029.mac.com [17.148.16.104]) by mx1.freebsd.org (Postfix) with ESMTP id 862F68FC1C for ; Tue, 1 Jun 2010 16:55:02 +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 asmtp029.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0L3C006XSHND6590@asmtp029.mac.com> for freebsd-current@freebsd.org; Tue, 01 Jun 2010 09:54:50 -0700 (PDT) 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=6.0.2-1004200000 definitions=main-1006010102 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.8161:2.4.5,1.2.40,4.0.166 definitions=2010-06-01_02:2010-02-06, 2010-06-01, 2010-06-01 signatures=0 From: Marcel Moolenaar In-reply-to: <10053118405112.90489@www.mmlab.cse.yzu.edu.tw> Date: Tue, 01 Jun 2010 09:54:49 -0700 Message-id: <3CEA6831-076A-4DA6-8B11-509018BB9768@mac.com> References: <95891.1238477069@critter.freebsd.dk> <20090331133132.1e191836@ernst.jennejohn.org> <20090331155542.74d89d64@ernst.jennejohn.org> <60084D1E-9F64-463A-A8E9-7A237D5C7661@mac.com> <0904011910169.29800@www.mmlab.cse.yzu.edu.tw> <0904020940371.36257@www.mmlab.cse.yzu.edu.tw> <4CCDEFD6-830E-4C8F-B7A2-B7878F8842BE@mac.com> <0904021314574.37737@www.mmlab.cse.yzu.edu.tw> <09040309313414.76643@www.mmlab.cse.yzu.edu.tw> <10053118405112.90489@www.mmlab.cse.yzu.edu.tw> To: Tai-hwa Liang X-Mailer: Apple Mail (2.1078) Cc: freebsd-current@freebsd.org Subject: Re: Removal of GEOM_BSD, GEOM_MBR, GEOM_PC98 and GEOM_SUNLABEL X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jun 2010 16:55:02 -0000 On May 31, 2010, at 3:57 AM, Tai-hwa Liang wrote: > > http://en.wikipedia.org/wiki/Extended_boot_record says that there may > be another boot loader inside 0x0 ~ 0x1bd. If that's the case, I'm > wondering if there is any disadvantage to disable the checksumming > against 0x60 ~ 0x1b5? The intend was to prevent false positives. I think it's probably best to remove the checksumming and deal with false positives differently: such as by making sure that the partition has the right type... -- Marcel Moolenaar xcllnt@mac.com