I tried with packet-cd 2.4.19-2 and UDF from CVS. cdrwtool -d /dev/sr1 -q using device /dev/sr1 8065KB internal buffer setting write speed to 12x Settings for /dev/sr1: Fixed packets, size 32 Mode-2 disc I'm going to do a quick setup of /dev/sr1. The disc is going to be blanked and formatted with one big track. All data on the device will be lost!! Press CTRL-C to cancel now. ENTER to continue. Initiating quick disc blank wait_cmd: Input/output error Command failed: a1 01 00 00 00 00 00 00 00 00 00 00 - sense 03.51.00 blank disc: Illegal seek And in the logs: Sep 12 14:00:14 pervalidus kernel: cdrom: This disc doesn't have any tracks I recognize! Sep 12 14:01:05 pervalidus kernel: sr1: CDROM (ioctl) error, command: 0xa1 01 00 00 00 00 00 00 00 00 00 00 Sep 12 14:01:05 pervalidus kernel: Current sr00:00: sns = 70 3 Sep 12 14:01:05 pervalidus kernel: ASC=51 ASCQ= 0 Sep 12 14:01:05 pervalidus kernel: Raw sense data:0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0a 0x00 0x00 0x00 0x00 0x51 0x00 0x00 0x00 0x00 0x00 I also tried with a disk formatted with InCD 3.31 on Windows XP Professional. I used Midnight Commander to copy / remove files and directories: 1- I removed some files and added updated ones. They have the same name. It doesn't work. 2- Some files I added don't show up but when I try to copy them again mc reports they're the same. -- 0@pervalidus.{net, {dyndns.}org}