From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1NAiFw-000388-9h for garchives@archives.gentoo.org; Wed, 18 Nov 2009 10:59:24 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0477BE096F; Wed, 18 Nov 2009 10:59:08 +0000 (UTC) Received: from emailteste.ufop.br (emailteste.ufop.br [200.131.208.186]) by pigeon.gentoo.org (Postfix) with ESMTP id 4996AE096F for ; Wed, 18 Nov 2009 10:59:07 +0000 (UTC) Received: (qmail 12940 invoked by uid 89); 18 Nov 2009 10:46:51 -0000 Received: by simscan 1.3.1 ppid: 12915, pid: 12928, t: 0.0620s scanners: attach: 1.3.1 clamav: 0.91.2/m:/d:4015 Received: from unknown (HELO malaquias.no-ip.info) (romildo@iceb.ufop.br@200.131.25.75) by 0 with ESMTPA; 18 Nov 2009 10:46:51 -0000 Received: by malaquias.no-ip.info (Postfix, from userid 500) id 8CF8510A03D; Wed, 18 Nov 2009 08:48:45 -0200 (BRST) Date: Wed, 18 Nov 2009 08:48:45 -0200 From: =?iso-8859-1?Q?Jos=E9?= Romildo Malaquias To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Reading a DVD as an ISO image Message-ID: <20091118104845.GD13353@malaquias.DHCP-GERAL> References: <20091117062411.GA16698@malaquias.DHCP-GERAL> <4B02CC0C.6000600@cox.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) X-Archives-Salt: ad45537d-bae7-48ef-a9fd-fe50a61de0fe X-Archives-Hash: dde7d2a8ac56afb3ea0efdebd2ff2b6c On Tue, Nov 17, 2009 at 04:54:20PM +0000, Grant Edwards wrote: > On 2009-11-17, Marcus Wanner wrote: > > > My guess is that he has a slow internet connection, he > > downloaded a large iso, burned it, deleted it, and now wants > > to get the iso back without downloading it again, but he has > > access to the checksum/filesize of the original iso from the > > place he downloaded it, and when he makes an iso, the > > checksum/filesize does not match. > > In my experience that happens because one or the other of the > images has "extra" garbage blocks past the end of the actual > ISO filesystem image. If you look at the ISO filesystem header > and find the actual size of the image, it's probably smaller > than the "image file". If you only compare the bytes within > the ISO image itself, I bet the two will match. In fact the size of the iso images obtained with dd and with cdread are a little bit larger than the original one. The iso image obtained by mkisofs on the mounted disc (with the udf filesystem type) are of the right size, but still not identical to the original. Romildo