How to identify the DVD device for recording data

[Graham Freeman <g-freeman@adfa.edu.au>]

I am trying to use growisofs to backup data to DVD-R on my Fedora FC3 
IBM ThinkCentre machine, running Gnome.  I have successfully used 
cdrecord with the command
  mkisofs -hide-joliet-trans-tbl -R -d -allow-leading-dots -l  . | 
cdrecord -dev=/dev/hdc -v --eject - 
to record to CD-Rs.

When I try
  growisofs -J -R -Z /dev/hdc -speed=2 -graft-points /src=/src 
/local=/home/usr/local /etc=/etc
as root, I get the response
  :-( /dev/hdc: media is not recognized as recordable DVD: 0

There is no device /dev/scd0 on the machine or anything similar.  When I 
try
  cdrecord -scanbus
I get the response
  Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004 
Jörg Schilling
  Note: This version is an unofficial (modified) version with DVD support
  Note: and therefore may have bugs that are not present in the original.
  Note: Please send bug reports or support requests to 
http://bugzilla.redhat.com/bugzilla
  Note: The author of cdrecord should not be bothered with problems in 
this version.
  scsidev: 'ATA'
  devname: 'ATA'
  scsibus: -2 target: -2 lun: -2
  Linux sg driver version: 3.5.27
  Using libscg version 'schily-0.8'.
  cdrecord: Warning: using inofficial libscg transport code version 
(schily - Red Hat-scsi-linux-sg.c-1.83-RH       
'@(#)scsi-linux-sg.c        1.83 04/05/20 Copyright 1997 J. Schilling').
  scsibus1:
       1,0,0   100) 'HL-DT-ST' 'RW/DVD GCC-4481B' '1.03' Removable CD-ROM
       1,1,0   101) *
       1,2,0   102) *
       1,3,0   103) *
       1,4,0   104) *
       1,5,0   105) *
       1,6,0   106) *
       1,7,0   107) *

I have tried changing media to DVD+RW, with the same symptoms.

I do not think any program is trying to automount the disk.  /etc/fstab 
looks like this:
  # This file is edited by fstab-sync - see 'man fstab-sync' for details
  /dev/VolGroup00/LogVol00 /                       ext3    
defaults        1 1
  LABEL=/boot             /boot                   ext3    
defaults        1 2
  none                    /dev/pts                devpts  
gid=5,mode=620  0 0
  none                    /dev/shm                tmpfs   
defaults        0 0
  none                    /proc                   proc    
defaults        0 0
  none                    /sys                    sysfs   
defaults        0 0
  /dev/VolGroup00/LogVol01 swap                    swap    
defaults        0 0
  #/dev/sda1               /zip                    vfat    
noauto,user     0 0
  /dev/sda1               /media/usbdisk          vfat    
noauto,user     0 0
  #/dev/hdc                /media/cdrecorder       auto   
pamconsole,fscontext=system_u:object_r:removable_t,ro,exec,noauto,managed 
0 0
  /dev/hdc   /media/cdrom  auto  
umask=0,user,codepage=850,iocharset=iso8859-1,users,noauto,ro,exec 0 0
  /dev/fd0                /media/floppy           auto    
pamconsole,fscontext=system_u:object_r:removable_t,exec,noauto,managed 0 0
[I have tried both /dev/hdc lines; the commented out version was working 
fine with cdrecord.]

/etc/mtab looks like this:
  /dev/mapper/VolGroup00-LogVol00 / ext3 rw 0 0
  none /proc proc rw 0 0
  none /sys sysfs rw 0 0
  none /dev/pts devpts rw,gid=5,mode=620 0 0
  usbfs /proc/bus/usb usbfs rw 0 0
  /dev/sda1 /boot ext3 rw 0 0
  none /dev/shm tmpfs rw 0 0
  none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
  sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0

How should I specify the device with growisofs?  Is the problem with the 
driver for this particular hardware?

                  Graham Freeman