From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <fredde@pobox.com>
X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-14) on finch.gentoo.org
X-Spam-Level: 
X-Spam-Status: No, score=0.7 required=5.0 tests=DMARC_NONE,FSL_HELO_NON_FQDN_1,
	HELO_NO_DOMAIN,MAILING_LIST_MULTI,RDNS_DYNAMIC autolearn=no
	autolearn_force=no version=4.0.0
Received: from cyclops (c-fa1c71d5.013-21-6d6c6d90.cust.bredbandsbolaget.se [213.113.28.250])
	by chiba.3jane.net (Postfix) with ESMTP id 33491ABD7D
	for <gentoo-dev@gentoo.org>; Wed, 18 Sep 2002 05:14:26 -0500 (CDT)
Received: from fredde by cyclops with local (Exim 3.35 #1 (Debian))
	id 17rbqc-00011l-00
	for <gentoo-dev@gentoo.org>; Wed, 18 Sep 2002 12:14:18 +0200
Date: Wed, 18 Sep 2002 12:14:18 +0200
From: Fredrik Jagenheim <humming@pobox.com>
To: gentoo-dev@gentoo.org
Subject: Re: [gentoo-dev] making an 'iso' file
Message-ID: <20020918101418.GA3660@pobox.com>
Mail-Followup-To: gentoo-dev@gentoo.org
References: <461595C6-CA4F-11D6-92DE-000393953DC6@gentoo.or.kr> <1032291302.6384.24.camel@mephi.bartl.dyndns.biz>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1032291302.6384.24.camel@mephi.bartl.dyndns.biz>
User-Agent: Mutt/1.5.1i
Sender: gentoo-dev-admin@gentoo.org
Errors-To: gentoo-dev-admin@gentoo.org
X-BeenThere: gentoo-dev@gentoo.org
X-Mailman-Version: 2.0.6
Precedence: bulk
List-Help: <mailto:gentoo-dev-request@gentoo.org?subject=help>
List-Post: <mailto:gentoo-dev@gentoo.org>
List-Subscribe: <http://lists.gentoo.org/mailman/listinfo/gentoo-dev>,
	<mailto:gentoo-dev-request@gentoo.org?subject=subscribe>
List-Id: Gentoo Linux developer list <gentoo-dev.gentoo.org>
List-Unsubscribe: <http://lists.gentoo.org/mailman/listinfo/gentoo-dev>,
	<mailto:gentoo-dev-request@gentoo.org?subject=unsubscribe>
List-Archive: <http://lists.gentoo.org/pipermail/gentoo-dev/>
X-Archives-Salt: f79e7bad-93a1-44fe-97e6-77b66e15c695
X-Archives-Hash: 0a3a4a113130189dd2217f427bd6e73e

On Tue, Sep 17, 2002 at 10:01:36PM +0200, Christian Bartl wrote:
> Does 'dd -if=/dev/cdrom -of=foo.iso' create an iso-image?

Yes, if you have a CDROM in your drive that is. What this command does
is a byte for byte copy of the image on the /dev/cdrom, which if you
have an CD in your drive, usually means you will end up with an iso
image in 'foo.iso'.

I will ofcourse not create an iso-image from scratch for you.

> if no, are there any specification how iso-images have to look like
> (header ...)?

Yes, there are specifications for both the main iso layout (Red Book,
IIRC. Some color anyway) and the various extensions (Joliet,
rockridge). For more information, I guess 'mkisofs' source is a safe
bet. ;)