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Date:      Sun, 25 Jan 2009 02:53:46 +0100
From:      Polytropon <freebsd@edvax.de>
To:        Gary Kline <kline@thought.org>
Cc:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>, FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject:   Re: how to create a DVD backup filesystem?
Message-ID:  <20090125025346.3c67b14b.freebsd@edvax.de>
In-Reply-To: <20090125000258.GB31215@thought.org>
References:  <20090123011043.GA86638@thought.org> <20090123170407.A38136@wojtek.tensor.gdynia.pl> <20090125000258.GB31215@thought.org>

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On Sat, 24 Jan 2009 16:02:58 -0800, Gary Kline <kline@thought.org> wrote:
> 	After a dozen failures, your earlier post did work.  I did a
> 	mkdir cdr; cp'd hundreds of megs into it, then ran mkisofs.  And 
> 	lastly ran dvdisaster against the iso file to get an ECC listing.
> 
> 	Now to find out how to burn this image to a CD or DVD.... 

There are several possibilities. The hard way? :-)

1. Record on CD-R(W)

	a) FreeBSD's burncd

		% burncd -e -v -s 16 -f /dev/acd0 data cdr.iso fixate

	b) The port cdrtools (includes cdrecord)

		% cdrecord dev=1,0,0 speed=16 -v -eject -tao -data cdr.iso

2. Record on DVD+-*/R(W)

	The port dvd+rw-tools (includes growisofs)

		growisofs -dvd-compat -Z /dev/dvd=cdr.iso

	This example implies the following setting in /etc/devfs.conf:

		link    cd0     dvd

	Alter device to fit your needs.

As aleays, check the manpages. They're helpful and include kind-of
copy & paste examples.

Note that 1 b) and 2 need atapicam (in kernel or via kldload).

For 1 b), you can check which SCSI ID corresponds to your recorder
using the command

	% camcontrol devlist

Have in mind that permissions have to be set correctly in order to
access these devices for writing. It's intended to be that way. :-)

Finally, check the optimal writing speed for your CDs and DVDs.



> 	So long as this is readable on FBSD, Linux, or a Mac, I'll be
> 	happy.  

These platforms will read everything that has been mentioned in
this thread already, because they're real operating systems (and
not excuses for being none). :-)

I think the ISO-9660 + RockRidge is the most comfortable way for
what you intend - allthough the tar method (or even the UFS method)
won't be any problem here. But as I said, maximum compatibility is
always welcome for backups.



-- 
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...



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