Interesting DVD behaviour
I have a Pioneer DVR-104 with a recent firmware upgrade. I note from the
-prcap output that cdrecord identifies this as a 1X top speed drive. However,
since I upgraded the firmware, growisofs burns with it at 2X (using 4X media).
Would someone really sharp care to clarify how/why that happens?
Clearly there's a mismatch between what the drive reports and what it can
actually do, and growisofs can detect the 2X capability.
I have done the math, it's clear that the write is really running 2X. I attached
the -prcap output to preserve the format if it's vital.
--
E. Robert Bogusta
It seemed like a good idea at the time
scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Linux sg driver version: 3.1.24
Cdrecord 2.01a15 (i686-pc-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling
Using libscg version 'schily-0.7'
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'PIONEER '
Identifikation : 'DVD-RW DVR-104 '
Revision : '1.40'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Drive capabilities, per MMC-3 page 2A:
Does read CD-R media
Does write CD-R media
Does read CD-RW media
Does write CD-RW media
Does read DVD-ROM media
Does read DVD-R media
Does write DVD-R media
Does not read DVD-RAM media
Does not write DVD-RAM media
Does support test writing
Does read Mode 2 Form 1 blocks
Does read Mode 2 Form 2 blocks
Does read digital audio blocks
Does restart non-streamed digital audio reads accurately
Does support Buffer-Underrun-Free recording
Does read multi-session CDs
Does read fixed-packet CD media using Method 2
Does not read CD bar code
Does not read R-W subcode information
Does read raw P-W subcode data from lead in
Does return CD media catalog number
Does return CD ISRC information
Does not support C2 error pointers
Does not deliver composite A/V data
Does play audio CDs
Number of volume control levels: 256
Does support individual volume control setting for each channel
Does support independent mute setting for each channel
Does not support digital output on port 1
Does not support digital output on port 2
Loading mechanism type: tray
Does support ejection of CD via START/STOP command
Does not lock media on power up via prevent jumper
Does allow media to be locked in the drive via PREVENT/ALLOW command
Is not currently in a media-locked state
Does not support changing side of disk
Does not have load-empty-slot-in-changer feature
Does not support Individual Disk Present feature
Maximum read speed: 4233 kB/s (CD 24x, DVD 3x)
Current read speed: 4233 kB/s (CD 24x, DVD 3x)
Maximum write speed: 1411 kB/s (CD 8x, DVD 1x)
Current write speed: 1411 kB/s (CD 8x, DVD 1x)
Rotational control selected: CLV/PCAV
Buffer size in KB: 2000
Copy management revision supported: 1
Number of supported write speeds: 2
Write speed # 0: 1411 kB/s CLV/PCAV (CD 8x, DVD 1x)
Write speed # 1: 705 kB/s CLV/PCAV (CD 4x, DVD 0x)
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