anybody know how( if it is possible) to write an udf disk whith an external cd-writer usb? i'm able to format disk whith cdrwtool but when i mount the disk i'm unable to write into...everithing seem ok but doesn't wake up the red light on my writer...and so it doesn' write.... ex: /sbin/modprobe pktcdvd /sbin/modprobe udf /usr/local/bin/pktsetup /dev/pktcdvd /dev/sr1 /bin/mount /dev/pktcdvd /mnt/masterizzatore -t udf -o rw,noatime this the device propriety: [root@cosmogonia tmp]# ls -l /dev/sr1 brwxrwxrwx 1 root root 11, 1 10 nov 13:50 /dev/sr1 [root@cosmogonia tmp]# ls -l /dev/pktcdvd brwxrwxrwx 1 root disk 97, 0 10 nov 14:30 /dev/pktcdvd and this the usb recognised: usb.c: USB device 3 (ven/prod 0xecd/0x1403) is not claimed by any active driver usb-uhci.c: interrupt, status3, frame#1232 vendor: waitec model:frisbiII rev:usx1 type cd-rom ansi scsi revision:02 attached scsi cd-rom sr1 at scsi1, channel0, id0, lun0 sr1:scsi-1 drive i've tryed whith devfs too, those are the different command, but nothing change...: /sbin/modprobe pktcdvd /sbin/modprobe udf /usr/local/bin/pktsetup /dev/pktcdvd /dev/cdroms/cdrom1 /bin/mount /dev/pktcdvd /mnt/masterizzatore -t udf -o rw,noatime [vage@cosmogonia vage]$ ls -l /dev/scsi/host1/bus0/target0/lun0/cd (this is "/dev/cdroms/cdrom1") brw------- 1 vage root 11, 1 1 gen 1970 /dev/scsi/host0/bus0/target1/lun0/cd if you could give me any suggestion you'll be very appreciates!! many thanks!!