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I have not been able to make CD-RWs empty for some time. Even updating to udev did not help. In K3B the emptying seems to start but then in 1-2 seconds stops. Here is the debug log:
System
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K3b Version: 0.12.7
KDE Version: 3.4.3
QT Version: 3.3.5
Kernel: 2.6.12.4-vs2.0-VS
Devices
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QSI CDRW/DVD SBW-241 VX08 (/dev/hdc, ) at /media/cdwriter1 [CD-R; CD-RW; CD-ROM; DVD-ROM] [DVD-ROM; CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R96P; SAO/R96R; RAW/R16; RAW/R96P; RAW/R96R]
Used versions
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cdrecord: 2.1
cdrecord command:
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/usr/bin/cdrecord -v gracetime=2 dev=/dev/hdc speed=17 -tao driveropts=burnfree -eject blank=fast -force
cdrecord
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/usr/bin/cdrecord: Warning: Running on Linux-2.6.12.4-vs2.0-VS
/usr/bin/cdrecord: There are unsettled issues with Linux-2.5 and newer.
/usr/bin/cdrecord: If you have unexpected problems, please try Linux-2.4 or Solaris.
/usr/bin/cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
/usr/bin/cdrecord: WARNING: This causes a high risk for buffer underruns.
/usr/bin/cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
/usr/bin/cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
/usr/bin/cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
/usr/bin/cdrecord: Warning: using inofficial libscg transport code version (warly-scsi-linux-sg.c-1.83 '@(#)scsi-linux-sg.c 1.83 04/05/20 Copyright 1997 J. Schilling').
SCSI buffer size: 64512
Cdrecord-Clone 2.01 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
TOC Type: 1 = CD-ROM
Using libscg version 'schily-0.8'.
Driveropts: 'burnfree'
atapi: 1
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'QSI '
Identifikation : 'CDRW/DVD SBW-241'
Revision : 'VX08'
Device seems to be: Generic mmc2 DVD-ROM.
Current: 0x000A
Profile: 0x0010
Profile: 0x0008
Profile: 0x0009
Profile: 0x000A (current)
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-2 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
Drive buf size : 1605632 = 1568 KB
Current Secsize: 2048
ATIP info from disk:
Indicated writing power: 2
Reference speed: 6
Is not unrestricted
Is erasable
Disk sub type: High speed Rewritable (CAV) media (1)
ATIP start of lead in: -12374 (97:17/01)
ATIP start of lead out: 359849 (79:59/74)
1T speed low: 4 1T speed high: 10
2T speed low: 2 2T speed high: 10
power mult factor: 2 6
recommended erase/write power: 5
A1 values: 24 2C DC
A2 values: 14 A4 4A
A3 values: 02 D2 80
Disk type: Phase change
Manuf. index: 69
Manufacturer: Moser Baer India Limited
Manufacturer is guessed because of the orange forum embargo.
The orange forum likes to get money for recent information.
The information for this media may not be correct.
Waiting for drive to calm down.
Starting to write CD/DVD at speed 10 in real force BLANK mode for single session.
Last chance to quit, starting real write in 2 seconds.
1 seconds.
0 seconds.
Operation starts.
/usr/bin/cdrecord: Success. blank unit: scsi sendcmd: no error
CDB: A1 01 00 00 00 00 00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 24 00 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x24 Qual 0x00 (invalid field in cdb) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.001s timeout 9600s
Starting to write CD/DVD at speed 10 in real force BLANK mode for single session.
No chance to quit anymore. Operation starts.
Performing OPC...
Blanking PMA, TOC, pregap
/usr/bin/cdrecord: Success. blank unit: scsi sendcmd: no error
CDB: A1 01 00 00 00 00 00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 24 00 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x24 Qual 0x00 (invalid field in cdb) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.000s timeout 9600s
/usr/bin/cdrecord: Cannot blank disk, aborting.
/usr/bin/cdrecord: Some drives do not support all blank types.
/usr/bin/cdrecord: Try again with cdrecord blank=all.Offline
I made a quick test on a different computer and wiping a cd-rw empty worked just fine. So this is probably the hardware...
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