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Date:      Sun, 25 Jan 2009 10:05:12 +0100 (CET)
From:      Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To:        Gary Kline <kline@thought.org>
Cc:        tajudd@gmail.com, perryh@pluto.rain.com, Polytropon <freebsd@edvax.de>, freebsd-questions@freebsd.org
Subject:   Re: how to create a DVD backup filesystem?
Message-ID:  <20090125100344.V43743@wojtek.tensor.gdynia.pl>
In-Reply-To: <20090125015632.GD31215@thought.org>
References:  <20090123011043.GA86638@thought.org> <497954FE.8050206@gmail.com> <497a08f0.M7aLYVzoum+g95mw%perryh@pluto.rain.com> <20090125020349.47c3eb68.freebsd@edvax.de> <20090125015632.GD31215@thought.org>

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> 	cdr.iso:            ISO 9660 CD-ROM filesystem data 'CDROM
> 	642848 -rw-r--r--   1 kline  wheel  657922048 Jan 24 15:34 cdr.iso
>
> 	what is the safest command to use to burn to 1. a CD, and 2. a
> 	DVD?  Since `file' says that cdr.iso is a filesystem, I'm

if it ISO9660 filesystem image.

you may check it before writing this way

mdconfig -a -o readonly -t vnode -f cdr.iso
mount_cd9660 /dev/md0 /mnt

then after checking

umount /mnt
mdconfig -d -u 0

(assumed you don't use other md devices that moment, if so, device number 
will not be md0)

> 	assuming that I don't need to grow or newfs anything on the disc.

cdrtools for CD
dvd+rw-tools for DVD



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