growisofs - Invalid argument

["ml@bortal.de" <ml@bortal.de>]

Hello List,
whats wrong with my syntax here?

/usr/bin/growisofs -use-the-force-luke=notray -quiet 
-use-the-force-luke=4gms -A 'Bacula Data' -input-charset=default 
-iso-level 3 -pad -p 'dvd-handler / growisofs' -sysid 'BACULADATA' -R 
-use-the-force-luke=tty -Z /dev/hda /tmp/backup/Vol0003


I get:
-------------
WARNING: /dev/hda already carries isofs!
About to execute 'mkisofs -quiet -A Bacula Data -input-charset=default 
-iso-level 3 -pad -p dvd-handler / growisofs -sysid BACULADATA -R 
/tmp/backup/Vol0003 | builtin_dd of=/dev/hda obs=32k seek=0'
/dev/hda: "Current Write Speed" is 8.2x1385KBps.
:-[ WRITE@LBA=0h failed with SK=5h/ASC=21h/ACQ=02h]: Invalid argument
:-( write failed: Invalid argument



Thanks, Mario