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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

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Old 10-21-2007, 09:49 AM   #1
bong.mau
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how to query supported speed by cd and dvd


hi

is thera a tool or a pgm or a command that query CD or DVD drive
to abatain this info ?
i.e dvd
dvd max read speed
dvd-r max write speed
dvd-rw max write speed
cd-r max read speed
cd-r max write speed
cd-rw max write-speed

thanks in advance

Maurizio
 
Old 10-21-2007, 11:18 AM   #2
macemoneta
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The cdrecord command will return this information (near the bottom), and a lot more:

Code:
# cdrecord dev=/dev/hdc -prcap
Cdrecord-Clone 2.01 (cpu-pc-linux-gnu) Copyright (C) 1995-2004 J�rg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to http://bugzilla.redhat.com/
bugzilla
Note: The author of cdrecord should not be bothered with problems in this versio
n.
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
cdrecord: Warning: using inofficial libscg transport code version (schily - Red 
Hat-scsi-linux-sg.c-1.83-RH '@(#)scsi-linux-sg.c        1.83 04/05/20 Copyright 
1997 J. Schilling').
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   :
Vendor_info    : 'MATSHITA'
Identifikation : 'UJDA720 DVD/CDRW'
Revision       : '1.00'
Device seems to be: Generic mmc2 DVD-ROM.

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 not write DVD-R media
  Does 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:  4234 kB/s (CD  24x, DVD  3x)
  Current read  speed:  4234 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: 2048
  Copy management revision supported: 1
  Number of supported write speeds: 3
  Write speed # 0:  1411 kB/s CLV/PCAV (CD   8x, DVD  1x)
  Write speed # 1:   706 kB/s CLV/PCAV (CD   4x, DVD  0x)
  Write speed # 2:   353 kB/s CLV/PCAV (CD   2x, DVD  0x)
 
  


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