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cdrecord: unclear error messages with non-blank DVD-RW



Hi Joerg,

while exploring DVD burning in theory and practice i
stumbled over some user-confusing behavior of cdrecord
in cases where a DVD-RW media is not in a suitable state.

With written, non-appendable media it begins to issue
error messages about CD and "100 minutes".

With appendable media it runs into an SCSI error by attempting
53h RESERVE TRACK although feature 002Fh "DVD-R/-RW Write"
is not current.


Have a nice day :)

Thomas


Details:
----------------------------------------------------------------------------
Closed media produced by cdrecord -sao :

$ cdrecord -v dev=0,0,0 driveropts=burnfree -eject -sao /dvdbuffer/fertig.iso
Cdrecord-ProDVD-Clone 2.01.01a23 (i686-pc-linux-gnu) Copyright (C) 1995-2006 Jörg Schilling
TOC Type: 1 = CD-ROM
scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Linux sg driver version: 3.1.25
Using libscg version 'schily-0.9'.
Driveropts: 'burnfree'
SCSI buffer size: 64512
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : '_NEC    '
Identifikation : 'DVD_RW ND-4570A '
Revision       : '1.02'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Current: DVD-RW sequential overwrite
Profile: DVD+R/DL 
Profile: DVD+R 
Profile: DVD+RW 
Profile: DVD-R/DL sequential recording 
Profile: DVD-RW sequential overwrite (current)
Profile: DVD-RW restricted overwrite (current)
Profile: DVD-RAM 
Profile: DVD-R sequential recording 
Profile: DVD-ROM 
Profile: CD-RW 
Profile: CD-R 
Profile: CD-ROM 
Profile: Removable Disk 
Using generic SCSI-3/mmc-2 DVD-R/DVD-RW/DVD-RAM driver (mmc_dvd).
Driver flags   : DVD MMC-3 SWABAUDIO BURNFREE 
Supported modes: PACKET SAO
Drive buf size : 1769472 = 1728 KB
FIFO size      : 4194304 = 4096 KB
Track 01: data   125 MB        
Total size:      125 MB = 64062 sectors
Current Secsize: 2048
WARNING: Phys disk size 1077264 differs from rzone size 0! Prerecorded disk?
WARNING: Phys start: 196608 Phys end 1273871
cdrecord: Data will not fit on any disk.
cdrecord: Cannot write CD's >= 100 minutes.

----------------------------------------------------------------------------
Appendable media produced by growisofs or cdrskin :

$ cdrecord -v dev=0,0,0 driveropts=burnfree -eject -sao  /dvdbuffer/fertig.iso
Cdrecord-ProDVD-Clone 2.01.01a23 (i686-pc-linux-gnu) Copyright (C) 1995-2006 Jörg Schilling
TOC Type: 1 = CD-ROM
scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Linux sg driver version: 3.1.25
Using libscg version 'schily-0.9'.
Driveropts: 'burnfree'
SCSI buffer size: 64512
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : '_NEC    '
Identifikation : 'DVD_RW ND-4570A '
Revision       : '1.02'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Current: DVD-RW sequential overwrite
Profile: DVD+R/DL 
Profile: DVD+R 
Profile: DVD+RW 
Profile: DVD-R/DL sequential recording 
Profile: DVD-RW sequential overwrite (current)
Profile: DVD-RW restricted overwrite (current)
Profile: DVD-RAM 
Profile: DVD-R sequential recording 
Profile: DVD-ROM 
Profile: CD-RW 
Profile: CD-R 
Profile: CD-ROM 
Profile: Removable Disk 
Using generic SCSI-3/mmc-2 DVD-R/DVD-RW/DVD-RAM driver (mmc_dvd).
Driver flags   : DVD MMC-3 SWABAUDIO BURNFREE 
Supported modes: PACKET SAO
Drive buf size : 1769472 = 1728 KB
FIFO size      : 4194304 = 4096 KB
Track 01: data   125 MB        
Total size:      125 MB = 64062 sectors
Current Secsize: 2048
Trying to clear drive status.
cdrecord: Drive needs to reload the media to return to proper status.
WARNING: Phys disk size 524288 differs from rzone size 0! Prerecorded disk?
WARNING: Phys start: 196608 Phys end 720895
Starting to write CD/DVD at speed 4 in real SAO mode for single session.
Last chance to quit, starting real write    0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
BURN-Free is OFF.
Turning BURN-Free on
cdrecord: Input/output error. reserve_track_rzone: scsi sendcmd: no error
CDB:  53 00 00 00 00 00 00 FA 3E 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 30 05 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x30 Qual 0x05 (cannot write medium - incompatible format) Fru 0x0
Sense flags: Blk 0 (not valid) 
cmd finished after 0.001s timeout 100s
cdrecord: Cannot open next track.
Writing  time:    0.030s
Average write speed 999.0x.
Fixating...
Fixating time:    0.000s
BURN-Free was not used.
cdrecord: fifo had 64 puts and 0 gets.
cdrecord: fifo was 0 times empty and 0 times full, min fill was 100%.

---------------------
Reproducability info:

Appendable DVD-RW emerge from media which offer feature 0021h.
On my drives this demands appendable, new or fully blanked media.
  cdrecord blank=all
or
  dvd+rw-format -blank=full
or
  cdrskin blank=all

To be burned by
  growisofs -Z /dev/... /some/files
or
  cdrskin dev=/dev/... -multi image.iso

To be closed by
  growisofs -dvd-compat -M /dev/... /more/files
or
  cdrskin dev=/dev/... another_image.iso
(cdrskin version at least 0.3.2)

I wrote down what i learned so far in
http://libburnia.pykix.org/browser/libburn/trunk/doc/cookbook.txt?format=txt
section "Sequential DVD-R[W] Cookbook".
(Hints and corrections are highly welcome.)
 



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