From owner-freebsd-questions@freebsd.org Fri Jun 12 20:58:32 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D2A67345F21 for ; Fri, 12 Jun 2020 20:58:32 +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 49kCkH2vKnz43tD for ; Fri, 12 Jun 2020 20:58:30 +0000 (UTC) (envelope-from rfg@tristatelogic.com) Received: by segfault.tristatelogic.com (Postfix, from userid 1237) id D40A84E751; Fri, 12 Jun 2020 13:58:29 -0700 (PDT) From: "Ronald F. Guilmette" cc: freebsd-questions@freebsd.org Subject: Re: Makin' backups -- questions In-Reply-To: <6ba3f007-3045-99be-5d35-10c75b37ab17@holgerdanske.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <92537.1591995509.1@segfault.tristatelogic.com> Date: Fri, 12 Jun 2020 13:58:29 -0700 Message-ID: <92538.1591995509@segfault.tristatelogic.com> X-Rspamd-Queue-Id: 49kCkH2vKnz43tD X-Spamd-Bar: ++ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of rfg@tristatelogic.com designates 69.62.255.118 as permitted sender) smtp.mailfrom=rfg@tristatelogic.com X-Spamd-Result: default: False [2.61 / 15.00]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[tristatelogic.com]; NEURAL_SPAM_MEDIUM(0.45)[0.454]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_SPAM_SHORT(0.40)[0.399]; NEURAL_SPAM_LONG(0.06)[0.060]; MISSING_TO(2.00)[]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:14051, ipnet:69.62.128.0/17, country:US] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Jun 2020 20:58:32 -0000 In message <6ba3f007-3045-99be-5d35-10c75b37ab17@holgerdanske.com>, David Christensen wrote: >>> 2. I use MBR partitioning, to avoid problems with the GPT backup >>> partition table when the source and target device sizes differ. I should perhaps have mentioned earlier that due to the fact that I use rsync to make my backups, if the source and target partitions are not exactly identical in size, this generally causes no problems, assuming of course that the output partition is big enough to hold copies of all of the -files- on the input partition. >> You're going to have to explain that one to me. What are these "problems" >> of what you speak? > >See "Secondary GPT": > >https://en.wikipedia.org/wiki/GUID_Partition_Table I know, in general, what GPT is and I am aware that there is a second backup copy of that partition table. I am not aware of any specific "problems" this creates, in actual or common practice, relative to MBR. I converted all of my own drives to GPT some time ago now, and I have never experienced any special issues or problems as a result of that change-over. So I am still puzzled by your assertion that GPT can be in some way(s) more problematic that MBR. Regards, rfg