What do I put in fstab to get my DVD/CDROM burner to work?

David J Brooks freysman at comcast.net
Fri Nov 16 21:28:24 PST 2007

On Friday 16 November 2007 10:50:33 pm you wrote:
> On Fri, Nov 16, 2007 at 10:24:30PM -0500, Chris Hill wrote:
> > On Fri, 16 Nov 2007, David J Brooks wrote:
> > >On Friday 16 November 2007 08:23:21 pm Gary Kline wrote:
> > >>	I've googled aroound, and can't be sure what to  add in the
> > >>	FStype column to get my DCD/CDROM  burners to work.  Ubuntu
> > >>	installed ny 2005 burner automagically.  Nothing like that for
> > >>	FreeBSD, so can anybody clue me in what I substitute for
> > >>	"udf" and "cd9660"?
> > >>
> > >>	This is the old and current fstable:
> > >>
> > >>
> > >># DVD drive (top)
> > >>/dev/acd0               /media/cdroms/0 udf     ro,noauto       0      
> > >> 0 # CD-burner (bottom)
> > >>/dev/acd1               /media/cdroms/1 cd9660  ro,noauto       0      
> > >> 0
> > >
> > >cd9660 is what you need. for the burner at least though, you'll want
> > >to make it rw rather than ro.
> >
> > Good point! Although my CD burner burns CDs just fine with either
> > cdrecord or burncd, even with ro in its fstab line.
> >
> > >This chapter of the handbook:
> > >http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/creating-cds.h
> > >tml
> > >
> > >and the one that follows are worth a careful reading.
> 	I think I have this page bookmarked; can't find it.  I'll try
> 	"rw" and "ro".   Can either you or David explain why I get a
> 	popup error: Can't mount volume. [?] When I clicked on the
> 	Details, it says:
> 		mount_cd9660: /dev/acd1: Operation not permitted
> 	I click  on "System" (upper left) -> Preferences ->
> 	"Removable Drives and Media Prederences"  and select every
> 	peermissions box.   Nothing.   (I'm using a data disk, not
> 	audio.)
> 	Ideas?

This page of info from K3B may shed some light on the problem for you: 

Notes for FreeBSD 5.x and onwards users:
1. The FreeBSD k3b port supports SCSI drives only. If you have IDE CD or DVD
   drives, use them through the cam system. See Chapter 12.5.9 of the handbook
2. Your CD and DVD drives must have a mount point in /etc/fstab. They have
   to be accessed through their atapicam device if possible. I.e. the drives
   have to be adressed by e.g. /dev/cd0 instead of /dev/acd0.
3. k3b has to be started from a root console, which is not recommended.
   Alternatively do ALL of the following:
3a. set the suid flag on cdrecord and cdrdao. The 'Notes' chapter of
    'man cdrecord' discusses this.
3b. - For every user who should be able to use k3b and for every CD or DVD
      device add a directory in the users home directory. These directories
      must be owned by the corresponding user. For each such directory add a
      line in /etc/fstab (see remark 2), like:
        /dev/cd0c  /usr/home/XXX/cdrom  cd9660  ro,noauto,nodev,nosuid  0  0
      Furthermore allow user mounts as described in topic 9.22 of the FAQ:
      To make the chmod's to /dev/cdX permanent, do the following:
        * add 'devd_enable="YES"' to /etc/rc.conf
        * add a 'perm cdX 666' to /etc/devfs.conf for each cd/dvd device. X
          is the device number. If you prefer allow access for a group only,
          add a 'perm cdX 660' instead, followed by an 'own cdX root:XXX'
          where XXX is the group name.
          Alternatively (especially if you are using hot plug capable CD or
          DVD drives) you could add an 'add path 'cd*' mode 666' or an
          'add path 'cd*' mode 660 group XXX' to your /etc/devfs.rules
          under '[system=10]'. To enable it, add 
a 'devfs_system_ruleset="system"'
          to your /etc/rc.conf.
    - or just give mount and umount the suid flag, which is a security leak.
3c. Every user who should be able to use k3b must have read and write access
    to all pass through devices connected with CD and DVD drives and to the
    /dev/xpt0 device. Run 'camcontrol devlist' to identify those devices (seek
    string 'passX' at the end of each line and modify the rights of
    /dev/passX). Note, that this is a security leak as well but that there is
    no alternative! To make this changes permanent, add 'devd_enable="YES"'
    to /etc/rc.conf as described above. Furthermore add a 'perm passX 666'
    for each pass device and a 'perm xpt0 666'. If you prefer to bind the
    access rights to a group, use the own command as described above. If you
    prefer to set this rights dynamically, add a line 'add path 'pass*' ...'
    to your /etc/devfs.rules as described above.
4. Check, that DMA is activated for atapi devices: 'sysctl hw.ata.atapi_dma'
   If not, set it to 1 and put a 'hw.ata.atapi_dma=1' into /boot/loader.conf.
5. Create a directory on a partition, which has enough disk space to hold a 
   or DVDs content (usually below /usr). Enter this directory in Settings->
   Configure K3b...->Misc.
6. If you experience problems while burning CDs, try to set the cdrdao driver
   manually. To do so choose Settings->Configure K3b...->Devices. Below the CD
   recorder click on the string "auto" behind "Cdrdao driver:" For most of the
   recent drives "generic-mmc" or "generic-mmc-raw" should work.
   See http://cdrdao.sourceforge.net/drives.html.

To read this instructions again, type 'make showinfo' in the k3b port 
This message coming soon to an illegal DVD.

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