Re: mounting DVD

To: netbsd-users%NetBSD.org@localhost
Subject: Re: mounting DVD
From: "Jeremy C. Reed" <reed%reedmedia.net@localhost>
Date: Sat, 23 Jan 2010 09:38:39 -0600 (CST)
Replying to a few emails below...

On Fri, 22 Jan 2010, Dave wrote:

>   On second thought, though, can your DVD RAM drive definitely read
> DVD+R media?  ("cdrecord -prcap"?)

cdrecord: Warning: using inofficial libscg transport code version 
(frueauf-scsi-bsd.c-1.47nb1 '@(#)scsi-bsd.c     1.47 09/04/19 Copyright 
1997-2009 J. Schilling').
End LBA:     2295103
Read Speed:    11080 == 8x DVD
Write Speed:   11080 == 8x DVD

End LBA:     2295103
Read Speed:     8310 == 6x DVD
Write Speed:    8310 == 6x DVD

End LBA:     2295103
Read Speed:     5540 == 4x DVD
Write Speed:    5540 == 4x DVD

End LBA:     2295103
Read Speed:     3324 == 2x DVD
Write Speed:    3324 == 2x DVD

Cdrecord-ProDVD-ProBD-Clone 2.01.01a64 (amd64-unknown-netbsd5.0.) 
Copyright (C) 1995-2009 Jrg Schilling
Using libscg version 'schily-0.9'.
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'MATSHITA'
Identifikation : 'DVD-RAM UJ880AS '
Revision       : '1.50'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.

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 read DVD-RAM media
  Does 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 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 support C2 error pointers
  Does 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 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: 11080 kB/s (CD  62x, DVD  8x, BD  2x)
  Current read  speed: 11080 kB/s (CD  62x, DVD  8x, BD  2x)
  Maximum write speed: 11080 kB/s (CD  62x, DVD  8x, BD  2x)
  Current write speed: 11080 kB/s (CD  62x, DVD  8x, BD  2x)
  Rotational control selected: CLV/PCAV
  Buffer size in KB: 2048
  Copy management revision supported: 1
  Number of supported write speeds: 4
  Write speed # 0: 11080 kB/s CLV/PCAV (CD  62x, DVD  8x, BD  2x)
  Write speed # 1:  8310 kB/s CLV/PCAV (CD  47x, DVD  6x, BD  1x)
  Write speed # 2:  5540 kB/s CLV/PCAV (CD  31x, DVD  4x, BD  1x)
  Write speed # 3:  3324 kB/s CLV/PCAV (CD  18x, DVD  2x, BD  0x)

Current performance according to MMC get performance:

Maximum performance according to MMC get performance:

Supported CD-RW media types according to MMC-4 feature 0x37:
  Does write multi speed       CD-RW media
  Does write high  speed       CD-RW media
  Does write ultra high speed  CD-RW media
  Does not write ultra high speed+ CD-RW media

Supported profiles according to MMC-4 feature list:
Current: DVD+R
Profile: DVD-RAM 
Profile: DVD+R/DL 
Profile: DVD+R (current)
Profile: DVD+RW 
Profile: DVD-R/DL sequential recording 
Profile: DVD-RW restricted overwrite 
Profile: DVD-RW sequential recording 
Profile: DVD-R sequential recording 
Profile: DVD-ROM (current)
Profile: CD-RW 
Profile: CD-R 
Profile: CD-ROM 
Profile: Removable Disk 

Supported features according to MMC-4 feature list:
Feature: 'Profile List' (current) (persistent)
Feature: 'Core' (current) (persistent)
Feature: 'Morphing' (current) (persistent)
Feature: 'Removable Medium' (current) (persistent)
Feature: 'Write Protect'  
Feature: 'Random Readable' (current) 
Feature: 'Multi Read'  
Feature: 'CD Read'  
Feature: 'DVD Read' (current) 
Feature: 'Random Writable'  
Feature: 'Incremental Streaming Writable'  
Feature: 'Formattable'  
Feature: 'Defect Management'  
Feature: 'Restricted Overwrite'  
Feature: 'DVD+RW'  
Feature: 'DVD+R' (current) 
Feature: 'Rigid Restricted Overwrite'  
Feature: 'CD Track at Once'  
Feature: 'CD Mastering'  
Feature: 'DVD-R/-RW Write'  
Feature: 'CD-RW Write'  
Feature: 'DVD+R/DL Read'  
Feature: 'Power Management' (current) (persistent)
Feature: 'S.M.A.R.T.'  
Feature: 'CD Audio analog play'  
Feature: 'Microcode Upgrade'  
Feature: 'Time-out' (current) (persistent)
Feature: 'DVD-CSS'  
Feature: 'Real Time Streaming' (current) 
Feature: 'Logical Unit Serial Number' (current) (persistent)    Serial: 
'UF83  289387'
Feature: 'Disk Control Blocks' (current) 
Feature: 'DVD CPRM'  


On Fri, 22 Jan 2010, Steven Bellovin wrote:

> Can you run disklabel on the device?

tx:reed$ sudo disklabel /dev/cd0a
# /dev/cd0a:
type: ATAPI
disk: mydisc
label: fictitious
flags: removable
bytes/sector: 2048
sectors/track: 100
tracks/cylinder: 1
sectors/cylinder: 100
cylinders: 22952
total sectors: 2295104
rpm: 300
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0 

4 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a:   2295104         0     4.2BSD      0     0     0  # (Cyl.      0 -  
22951*)
 d:   2295104         0    ISO9660       0             # (Cyl.      0 -  
22951*)
disklabel: boot block size 0
disklabel: super block size 0
disklabel: partitions a and d overlap


On Sat, 23 Jan 2010, Sad Clouds wrote:

> Check if the DVD is a double layer type. For example it would say 
> something like DVD+R DL on the disk. If it is, then check your DVD
> drive has support for reading double layer discs. You can use
> sysutils/cdrtools package to find out capabilities of your drive:
> 
>  cdrecord -v dev=/dev/rcd0d -checkdrive

(I think some of this is repeated from above.)

scsidev: '/dev/rcd0d'
devname: '/dev/rcd0d'
scsibus: -2 target: -2 lun: -2
cdrecord: Warning: using inofficial libscg transport code version 
(frueauf-scsi-bsd.c-1.47nb1 '@(#)scsi-bsd.c     1.47 09/04/19 Copyright 
1997-2009 J. Schilling').
SCSI buffer size: 61440
cdrecord: Warning: The DMA speed test has been skipped.
Cdrecord-ProDVD-ProBD-Clone 2.01.01a64 (amd64-unknown-netbsd5.0.) 
Copyright (C) 1995-2009 Jrg Schilling
TOC Type: 1 = CD-ROM
Using libscg version 'schily-0.9'.
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'MATSHITA'
Identifikation : 'DVD-RAM UJ880AS '
Revision       : '1.50'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Current: DVD+R
Profile: DVD-RAM 
Profile: DVD+R/DL 
Profile: DVD+R (current)
Profile: DVD+RW 
Profile: DVD-R/DL sequential recording 
Profile: DVD-RW restricted overwrite 
Profile: DVD-RW sequential recording 
Profile: DVD-R sequential recording 
Profile: DVD-ROM (current)
Profile: CD-RW 
Profile: CD-R 
Profile: CD-ROM 
Profile: Removable Disk 
Using generic SCSI-3/mmc-3 DVD+R driver (mmc_dvdplusr).
Driver flags   : NO-CD DVD MMC-3 SWABAUDIO BURNFREE 
Supported modes: PACKET SAO
Drive buf size : 1572864 = 1536 KB

On Sat, 23 Jan 2010, Magnus Eriksson wrote:

> You could just try reading from /dev/cd0a with dd, if that doesn't 
> work then that's a pretty good indication that something's more 
> seriously wrong.

I used dd to get the first 51200 bytes (so yes I can read from it). 
hexdump shows the following (I don't know why so short):

0000000  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
*
0008000  \0   B   E   A   0   1 001  \0  \0  \0  \0  \0  \0  \0  \0  \0
0008010  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
*
0008800  \0   N   S   R   0   3 001  \0  \0  \0  \0  \0  \0  \0  \0  \0
0008810  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
*
0009000  \0   T   E   A   0   1 001  \0  \0  \0  \0  \0  \0  \0  \0  \0
0009010  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
*
000c800
Follow-Ups:
- Re: mounting DVD
  - From: Chris Bannister
- Re: mounting DVD
  - From: Magnus Eriksson
References:
- mounting DVD
  - From: Jeremy C. Reed
- Re: mounting DVD
  - From: ficovh
- Re: mounting DVD
  - From: Jeremy C. Reed
- Re: mounting DVD
  - From: Steven Bellovin
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