From owner-freebsd-questions  Mon Feb  7  9:12:24 2000
Delivered-To: freebsd-questions@freebsd.org
Received: from wop21.wop.wtb.tue.nl (wop21.wop.wtb.tue.nl [131.155.56.216])
	by builder.freebsd.org (Postfix) with ESMTP id AAF9E3F7F
	for <freebsd-questions@freebsd.org>; Mon,  7 Feb 2000 09:12:20 -0800 (PST)
Received: (from karelj@localhost)
	by wop21.wop.wtb.tue.nl (8.9.3/8.9.3) id SAA02215;
	Mon, 7 Feb 2000 18:09:19 +0100 (CET)
	(envelope-from karelj)
Date: Mon, 7 Feb 2000 18:09:19 +0100
From: "Karel J. Bosschaart" <karelj@wop21.wop.wtb.tue.nl>
To: Brian Skrab <sillybug@pinky.us.net>,
	freebsd-questions@freebsd.org
Subject: Re: Duplicating CDROMS in 1 step?
Message-ID: <20000207180918.A2172@wop21.wop.wtb.tue.nl>
Reply-To: K.J.Bosschaart@wtb.tue.nl
References: <200002042003.PAA17992@pinky.us.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Mailer: Mutt 1.0pre2i
In-Reply-To: <200002042003.PAA17992@pinky.us.net>
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

On Fri, Feb 04, 2000 at 03:03:51PM -0500, Brian Skrab wrote:
> Hello,
> 
> 	I have a Toshiba SCSI CDROM and a HP SCSI CD Writer on my FreeBSD
> 	3.4 machine.  I have been using the cdrecord and mkisofs tools to
> 	duplicate (for the most part) the data on a CD and burn it onto a
> 	CDR disc.  However, when I examine the portions of the disc used by
> 	mounting both the original and the duplicated CD they do not appear
> 	to contain the same amount of data.  This is also a somewhat
> 	cumbersome way to make copies.  Does anyone know of a tool for
> 	FreeBSD that will burn an exact duplicate of a CD to a CDR?

I used dd recently to make a duplicate of a CD (man dd for details):

dd bs=2048 if=/dev/cd0c of=/image.iso

assuming the cdrom device is /dev/cd0c. Also the volume label gets 
copied, which otherwise needs to be done with a mkisofs option. It 
appears to be in the 17th sector, and this is actually the only way
I found to read the CD volume label in FreeBSD.

> 	Ideally, I'd like to pop a CD into the CDROM and a blank CDR into
> 	the CD writer, run the utility and have a complete copy burned byte
> 	for byte onto the CDR.  Does such a beast exist?
> 
It's obvious to pipe dd to cdrecord instead of making an image file... :-)

Hope it helps,
Karel. 


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message