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Date: Sat, 22 Jan 2011 20:33:29 +0100
From: Polytropon <freebsd@edvax.de>
To: Jens Jahnke <jan0sch@gmx.net>
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Cc: freebsd questions <freebsd-questions@freebsd.org>
Subject: Re: Burning a DVD
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On Sat, 22 Jan 2011 19:47:18 +0100, Jens Jahnke <jan0sch@gmx.net> wrote:
> Hi,
> 
> I tried to burn a dvd after doing setup according to the handbook.
> 
> /boot/loader.conf:
> atapicam_load="YES"
> hw.ata.atapi_dma="1"
> 
> /etc/devfs.conf:
> link	acd0	cdrom
> link	acd0	dvd
> perm 	acd0 	0660

And HERE is the mistake: You need to specify the /dev/cd0
device which gets accessed by the ATAPICAM facility. The
/dev/acd0 device does not understand SCSI commands.



> But when I try
> growisofs -dvd-compat -dry-run -Z /dev/acd0 /path/to/video
> I get:
> :-( unable to CAMGETPASSTHRU for /dev/acd0: Inappropriate ioctl for
> device

Fully correct. See "man growisofs" for an explaination
of what /dev/dvd refers to. You can either use

	growisofs -dvd-compat -Z /dev/dvd=/path/to/file.iso

or

	growisofs -dvd-compat -Z /dev/dvd -r -J /path/to/files

if you have devfs.conf point dvd to cd0 - or you simply
specify /dev/cd0 instead of /dev/dvd.



> No matter if I try as regular user or as root the error message stays
> the same.

Of course. :-)

Remember: ATA -> /dev/acd0, ATAPICAM ("SCSI over ATAPI") -> /dev/cd0,
and therefore /dev/dvd -> /dev/cd0 for simplified access.

Given you set the permissions correctly, burning DVDs as a
non-root user should be no problem.



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