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 1NAmfm-0004zw-3s for garchives@archives.gentoo.org; Wed, 18 Nov 2009 15:42:22 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 6EFD8E07D0; Wed, 18 Nov 2009 15:41:27 +0000 (UTC) Received: from mail-gx0-f224.google.com (mail-gx0-f224.google.com [209.85.217.224]) by pigeon.gentoo.org (Postfix) with ESMTP id 4915CE07D0 for ; Wed, 18 Nov 2009 15:41:27 +0000 (UTC) Received: by gxk24 with SMTP id 24so1313476gxk.6 for ; Wed, 18 Nov 2009 07:41:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type:content-transfer-encoding; bh=uvFhYG8CxCb87KNrPVhtV16oNCbtF0lp5miMev47Kxk=; b=PfFd1a2yGrc1MBUhVfFXJmggH11PPrJYze7xpQ+DuJq+KgeSIV28xJ2DcnnLH6YK5A XT2myg3hotNLkqnmels2Th4xDwih8ejmKrMlFqSn5UVrvraYIRiVys9d0wRjeE4+Smb9 MXTq3ywJAUjc4B/J/5hjocg/zeEzUCkGBP15o= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type :content-transfer-encoding; b=UNsYWeO2DaS8fFnxM/caYyyw19JnwKuM91/Tco9//Ira9GWMc2UDpgoeNbwJMOrTfb T+EI1fr/oryn8C7/owbskS437aPPLXVNPh1KGT9QMPeW3k6teNFpMisjKXDGYL9K+sgq x/j/ri7Q2MOrnWmcTrHg+X9bZgP0BCbGN46tk= 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 Sender: paul.hartman@gmail.com Received: by 10.150.125.24 with SMTP id x24mr2611007ybc.5.1258558563966; Wed, 18 Nov 2009 07:36:03 -0800 (PST) In-Reply-To: <20091118104845.GD13353@malaquias.DHCP-GERAL> References: <20091117062411.GA16698@malaquias.DHCP-GERAL> <4B02CC0C.6000600@cox.net> <20091118104845.GD13353@malaquias.DHCP-GERAL> Date: Wed, 18 Nov 2009 09:36:03 -0600 X-Google-Sender-Auth: abbd5636e5161029 Message-ID: <58965d8a0911180736o2745aee2yf46af8ac3f78d9e6@mail.gmail.com> Subject: Re: [gentoo-user] Re: Reading a DVD as an ISO image From: Paul Hartman To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: 540020ce-aacf-4ad9-ae62-1639a59c8a20 X-Archives-Hash: 7e23fd8b918a5d1156f180656b4d6489 2009/11/18 Jos=E9 Romildo Malaquias : > 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. This webpage has some info about comaring ISO images to burnt discs and a possible solution: http://twiki.org/cgi-bin/view/Wikilearn/CdromMd5sumsAfterBurning