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Date:      Sun, 25 Jan 2009 03:35:44 +0100
From:      cpghost <cpghost@cordula.ws>
To:        Gary Kline <kline@thought.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: how to create a DVD backup filesystem?
Message-ID:  <20090125023544.GD6405@phenom.cordula.ws>
In-Reply-To: <20090125015632.GD31215@thought.org>
References:  <20090123011043.GA86638@thought.org> <497954FE.8050206@gmail.com> <497a08f0.M7aLYVzoum%2Bg95mw%perryh@pluto.rain.com> <20090125020349.47c3eb68.freebsd@edvax.de> <20090125015632.GD31215@thought.org>

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On Sat, Jan 24, 2009 at 05:56:33PM -0800, Gary Kline wrote:
> 	Now that I have 
> 
> 	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
> 	assuming that I don't need to grow or newfs anything on the disc.

In addition to the cdrecord examples shown earlier, you can also
simply use burncd:

# burncd -f /dev/acd0 -s max data cdr.iso fixate

But remember one thing: don't try to mix and match accesses to
/dev/acd0 and /dev/cd0. IIRC, there are (were?) some issues with
using ATAPI and ATAPICAM drivers simultaneously.

If you prefer to stick to ATAPICAM (recommended), use cdrecord
to write to the virtual device represending the burner. Use
cdrecord's -scanbus option (as root!) to find out:

phenom# cdrecord -scanbus
Cdrecord-Clone 2.01 (amd64-unknown-freebsd7.1) Copyright (C) 1995-2004
Jörg Schilling
Using libscg version 'schily-0.8'.
scsibus0:
        0,0,0     0) *
        0,1,0     1) 'Optiarc ' 'DVD RW AD-7203A ' '1.01' Removable CD-ROM
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *

This would then be on that machine:

# cdrecord -v speed=8 dev=0,1,0 cdr.iso

To burn to a DVD, use growisofs, using something like this:

# growisofs -dvd-compat -speed=8 -Z /dev/cd0=cdr.iso

Regards,
-cpghost.

-- 
Cordula's Web. http://www.cordula.ws/



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