Hi all, I recently bought an AOpen 52/24/52 CD writer. I am using kernel-2.4.20 compiled with packet-2.4.20-2 patch for udf packet writing and tools from udftools-1.0.0b2. I can succesfully read and write udf packet into a udf-formatted CDRW disc but formatting and preparing a blank disc by using cdrwtool -d /dev/cdrom -q is not succesful. I previously suspected if the drive itself was faulty so I tried formatting and preparing a blank CDRW disc in Windows (using InCD and DirectCD) and it turned out that the CD writer was working just fine. Reading the specs, there is mentioned Mt Rainier support, is there anything to do with cdmrw patch? Below is error message I got from console window: [root@alimin root]# cdrwtool -d /dev/cdrom1 -q using device /dev/cdrom1 1328KB internal buffer setting write speed to 12x Settings for /dev/cdrom1: Fixed packets, size 32 Mode-2 disc I'm going to do a quick setup of /dev/cdrom1. 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 Disc capacity is 275744 blocks (551488KB/538MB) Formatting track start=0, blocks=16, type=RESERVED start=16, blocks=3, type=VRS start=19, blocks=237, type=USPACE start=256, blocks=1, type=ANCHOR start=257, blocks=31, type=USPACE start=288, blocks=32, type=PVDS start=320, blocks=32, type=LVID start=352, blocks=32, type=STABLE start=384, blocks=1024, type=SSPACE start=1408, blocks=274048, type=PSPACE start=275456, blocks=31, type=USPACE start=275487, blocks=1, type=ANCHOR start=275488, blocks=160, type=USPACE start=275648, blocks=32, type=STABLE start=275680, blocks=32, type=RVDS start=275712, blocks=31, type=USPACE start=275743, blocks=1, type=ANCHOR Writing UDF structures to disc wait_cmd: No medium found Command failed: 2a 00 00 00 00 00 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 01 00 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 01 20 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 01 40 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 01 60 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 05 80 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 05 a0 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 05 c0 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 05 e0 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 00 06 00 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 04 34 00 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 04 34 c0 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 04 34 e0 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 2a 00 00 04 35 00 00 00 20 00 00 00 - sense 02.04.07 wait_cmd: No medium found Command failed: 35 02 00 00 00 00 00 00 00 00 00 00 - sense 02.04.07 Quick setup complete! Here is a recorded dmesg: [alimin@compaq cdrom]$ cat dmesg pktcdvd: writer sr1 sucessfully registered pktcdvd: inserted media is CD-RW pktcdvd: Fixed packets, 32 blocks, Mode-2 disc pktcdvd: Max. media speed: 16 pktcdvd: speed (R/W) 0/0 pktcdvd: 551488kB available on disc UDF-fs DEBUG lowlevel.c:57:udf_get_last_session: XA disk: no, vol_desc_start=0 UDF-fs DEBUG super.c:1414:udf_read_super: Multi-session=0 UDF-fs DEBUG super.c:407:udf_vrs: Starting at sector 16 (2048 byte sectors) UDF-fs DEBUG super.c:1154:udf_check_valid: Failed to read byte 32768. Assuming open disc. Skipping validity check UDF-fs DEBUG misc.c:285:udf_read_tagged: location mismatch block 256, tag 0 != 256 UDF-fs DEBUG super.c:1208:udf_load_partition: No Anchor block found UDF-fs: No partition found (1) pktcdvd: speed (R/W) 0/0 hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. hdd: empty DMA table? sr1: CDROM not ready. Make sure there is a disc in the drive. sr1: CDROM not ready. Make sure there is a disc in the drive. Device not ready. Make sure there is a disc in the drive. Device not ready. Make sure there is a disc in the drive. Regards, Alimin