Still failed! I have changed the writing speed by putting it to 4x (in my first check was 2,4x). but I get the same error. here is the output script: Devices ----------------------- MATSHITA DVD-RAM UJ892AS 1.00 (/dev/sr0, CD-R, CD-RW, CD-ROM, DVD-ROM, DVD-R, DVD-RW, DVD-R DL, DVD+R, DVD+RW, DVD+R DL) [DVD-ROM, DVD-R sequenziale, DVD-R sequenziale a doppio strato, DVD-R jump a doppio strato, DVD-RAM, DVD-RW a riscrittura limitata, DVD-RW sequenziale, DVD+RW, DVD+R, DVD+R a doppio strato, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, Riscrittura limitata, Livello Jump] [%7] System ----------------------- K3b Version: 1.68.0 KDE Version: 4.3.2 (KDE 4.3.2) QT Version: 4.5.2 Kernel: 2.6.31-17-generic Used versions ----------------------- cdrecord: 1.1.9 cdrecord ----------------------- /usr/bin/wodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.scsidev: '/dev/sr0' devname: '/dev/sr0' scsibus: -2 target: -2 lun: -2 Linux sg driver version: 3.5.27 Wodim version: 1.1.9 SCSI buffer size: 64512 Beginning DMA speed test. Set CDR_NODMATEST environment variable if device communication breaks or freezes immediately after that. TOC Type: 1 = CD-ROM Driveropts: 'burnfree' Device type : Removable CD-ROM Version : 5 Response Format: 2 Capabilities : Vendor_info : 'MATSHITA' Identification : 'DVD-RAM UJ892AS ' Revision : '1.00' Device seems to be: Generic mmc2 DVD-R/DVD-RW. Current: 0x0015 (DVD-R/DL sequential recording) Profile: 0x0012 (DVD-RAM) Profile: 0x002B (DVD+R/DL) Profile: 0x001B (DVD+R) Profile: 0x001A (DVD+RW) Profile: 0x0016 (DVD-R/DL layer jump recording) (current) Profile: 0x0015 (DVD-R/DL sequential recording) (current) Profile: 0x0013 (DVD-RW restricted overwrite) Profile: 0x0014 (DVD-RW sequential recording) Profile: 0x0011 (DVD-R sequential recording) Profile: 0x0010 (DVD-ROM) Profile: 0x000A (CD-RW) Profile: 0x0009 (CD-R) Profile: 0x0008 (CD-ROM) Profile: 0x0002 (Removable disk) Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd). Driver flags : SWABAUDIO BURNFREE Supported modes: PACKET SAO Drive buf size : 458752 = 448 KB FIFO size : 12582912 = 12288 KB Speed set to 5540 KB/s Track 01: data 6033 MB Total size: 6928 MB (686:26.30) = 3088973 sectors Lout start: 6929 MB (686:28/23) = 3088973 sectors Current Secsize: 2048 HINT: use dvd+rw-mediainfo from dvd+rw-tools for information extraction. Blocks total: 4171712 Blocks current: 4171712 Blocks remaining: 1082739 Starting to write CD/DVD at speed 4.0 in real SAO mode for single session. Last chance to quit, starting real write in 2 seconds. 1 seconds. 0 seconds. Operation starts. Waiting for reader process to fill input buffer ... input buffer ready. Performing OPC... Sending CUE sheet... Starting new track at sector: 0 Track 01: 0 of 6033 MB written. Track 01: 1 of 6033 MB written (fifo 100%) [buf 99%] 0.1x. Track 01: 2 of 6033 MB written (fifo 100%) [buf 99%] 1.0x. Track 01: 3 of 6033 MB written (fifo 100%) [buf 99%] 2.1x. Track 01: 4 of 6033 MB written (fifo 100%) [buf 98%] 2.0x. Track 01: 5 of 6033 MB written (fifo 100%) [buf 98%] 2.1x. Track 01: 6 of 6033 MB written (fifo 100%) [buf 98%] 2.0x. Track 01: 7 of 6033 MB written (fifo 100%) [buf 98%] 2.1x. Track 01: 8 of 6033 MB written (fifo 100%) [buf 97%] 2.0x. Track 01: 9 of 6033 MB written (fifo 100%) [buf 97%] 2.1x. Track 01: 10 of 6033 MB written (fifo 100%) [buf 97%] 2.0x. Track 01: 11 of 6033 MB written (fifo 100%) [buf 97%] 2.1x. Track 01: 12 of 6033 MB written (fifo 100%) [buf 96%] 2.0x. Track 01: 13 of 6033 MB written (fifo 100%) [buf 96%] 2.1x. Track 01: 14 of 6033 MB written (fifo 100%) [buf 96%] 2.0x. Track 01: 15 of 6033 MB written (fifo 100%) [buf 96%] 2.1x. Track 01: 16 of 6033 MB written (fifo 100%) [buf 95%] 2.0x. I go to the end of output again because it's too long! Track 01: 6026 of 6033 MB written (fifo 100%) [buf 96%] 4.1x. Track 01: 6027 of 6033 MB written (fifo 100%) [buf 96%] 4.2x. Track 01: 6028 of 6033 MB written (fifo 100%) [buf 96%] 4.1x. Track 01: 6029 of 6033 MB written (fifo 100%) [buf 82%] 3.9x. Track 01: 6030 of 6033 MB written (fifo 100%) [buf 95%] 4.3x. Track 01: 6031 of 6033 MB written (fifo 100%) [buf 95%] 4.2x. Track 01: 6032 of 6033 MB written (fifo 100%) [buf 95%] 4.1x. Track 01: 6033 of 6033 MB written (fifo 100%) [buf 95%] 4.2x. Track 01: Total bytes read/written: 6326216704/6326216704 (3088973 sectors). Writing time: 1325.644s Average write speed 3.5x. Min drive buffer fill was 42% Fixating... Errno: 5 (Input/output error), flush cache scsi sendcmd: no error CDB: 35 00 00 00 00 00 00 00 00 00 status: 0x2 (CHECK CONDITION) Sense Bytes: 72 0B 00 00 00 00 00 0E 09 0C 00 00 00 03 00 00 Sense Key: 0x0 No Additional Sense, Segment 11 Sense Code: 0x00 Qual 0x03 (setmark detected) Fru 0x0 Sense flags: Blk 0 (not valid) cmd finished after 201.293s timeout 200s /usr/bin/wodim: Cannot fixate disk. Trouble flushing the cache Fixating time: 201.306s /usr/bin/wodim: fifo had 99645 puts and 99645 gets. /usr/bin/wodim: fifo was 0 times empty and 54467 times full, min fill was 94%. cdrecord command: ----------------------- /usr/bin/wodim -v gracetime=2 dev=/dev/sr0 speed=4 -sao driveropts=burnfree -data -tsize=3088973s - Please help me!