"Thomas Schmitt" <scdbac...@gmx.net> writes:
> First issue will be to clarify the true nature of this CD medium.
> Audio CDs (CD-DA) are recorded without any filesystem. There are "tracks"
> which usually each contain one piece of music. Tracks may be grouped
> by sessions. But that's rare with commercially mastered CDs.
>
> There are hybrid formats somewhere between CD-DA and CD-ROM which usually
> has ISO 9660 and/or UDF filesystems. The first track might contain the
> filesystem and further tracks contain audio or video streams.
>
> Please run one of
>
> wodim -v dev=/dev/sr0 -toc
>
> cdrskin -v dev=/dev/sr0 -toc
>
> A commercial audio CD-DA will show some tracks like:
>
> first: 1 last 10
> track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 0 mode: 0
> track: 2 lba: 23260 ( 93040) 05:12:10 adr: 1 control: 0 mode: 0
> track: 3 lba: 45067 ( 180268) 10:02:67 adr: 1 control: 0 mode: 0
> track: 4 lba: 61932 ( 247728) 13:47:57 adr: 1 control: 0 mode: 0
> track: 5 lba: 81697 ( 326788) 18:11:22 adr: 1 control: 0 mode: 0
> track: 6 lba: 101667 ( 406668) 22:37:42 adr: 1 control: 0 mode: 0
> track: 7 lba: 125462 ( 501848) 27:54:62 adr: 1 control: 0 mode: 0
> track: 8 lba: 143957 ( 575828) 32:01:32 adr: 1 control: 0 mode: 0
> track: 9 lba: 164232 ( 656928) 36:31:57 adr: 1 control: 0 mode: 0
> track: 10 lba: 185992 ( 743968) 41:21:67 adr: 1 control: 0 mode: 0
> track:lout lba: 202362 ( 809448) 45:00:12 adr: 1 control: 0 mode:
> -1
>
> A CD-ROM with several data tracks and sessions:
>
> first: 1 last 4
> track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 4 mode: 1
> track: 2 lba: 75614 ( 302456) 16:50:14 adr: 1 control: 4 mode: 1
> track: 3 lba: 102249 ( 408996) 22:45:24 adr: 1 control: 4 mode: 1
> track:lout lba: 121984 ( 487936) 27:08:34 adr: 1 control: 4 mode:
> -1
> track: 4 lba: 128884 ( 515536) 28:40:34 adr: 1 control: 4 mode: 1
> track:lout lba: 132116 ( 528464) 29:23:41 adr: 1 control: 4 mode:
> -1
>
> Whether a track is in CD-DA or CD-ROM format does not depend on the CD
> medium
> type CD-R, CD-RW, readily pressed CD.
Okay. What we got was surprisingly similar between a normal iso9660
audio cd that will play on any
functioning CD player since 1983 and the mystery format CD . Here is the
output from a normal music CD.
scsidev: '/dev/sr1'
devname: '/dev/sr1'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Wodim version: 1.1.11
SCSI buffer size: 64512
Beginning DMA speed test. Set CDR_NODMATEST environment variable if device
communication breaks or freezes immediately after that.
TOC Type: 1 = CD-ROM
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'SONY '
Identification : 'CD-RW CRX140E '
Revision : '1.0n'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-2 SWABAUDIO
Supported modes: TAO PACKET SAO SAO/R96R RAW/R96R
Drive buf size : 4183808 = 4085 KB
Drive DMA Speed: 21942 kB/s 124x CD 15x DVD
Current Secsize: 2048
first: 1 last 17
track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 0 mode: 0
track: 2 lba: 19142 ( 76568) 04:17:17 adr: 1 control: 0 mode: 0
all the way up to
track: 17 lba: 351017 ( 1404068) 78:02:17 adr: 1 control: 4 mode: 1
track:lout lba: 351785 ( 1407140) 78:12:35 adr: 1 control: 4 mode: -1
This is the output on the same drive from the mystery CD.
scsidev: '/dev/sr1'
devname: '/dev/sr1'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Wodim version: 1.1.11
SCSI buffer size: 64512
Beginning DMA speed test. Set CDR_NODMATEST environment variable if device
communication breaks or freezes immediately after that.
TOC Type: 1 = CD-ROM
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'SONY '
Identification : 'CD-RW CRX140E '
Revision : '1.0n'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-2 SWABAUDIO
Supported modes: TAO PACKET SAO SAO/R96R RAW/R96R
Drive buf size : 4183808 = 4085 KB
Drive DMA Speed: 21504 kB/s 122x CD 15x DVD
Current Secsize: 2048
ATIP info from disk:
Indicated writing power: 5
Is not unrestricted
Is not erasable
Disk sub type: Medium Type A, high Beta category (A+) (3)
ATIP start of lead in: -11634 (97:26/66)
ATIP start of lead out: 359846 (79:59/71)
Disk type: Short strategy type (Phthalocyanine or similar)
Manuf. index: 3
Manufacturer: CMC Magnetics Corporation
first: 1 last 20
track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 0 mode: 0
track: 2 lba: 17271 ( 69084) 03:52:21 adr: 1 control: 0 mode: 0
all the way up to
track: 19 lba: 280452 ( 1121808) 62:21:27 adr: 1 control: 0 mode: 0
track: 20 lba: 293350 ( 1173400) 65:13:25 adr: 1 control: 0 mode: 0
track:lout lba: 306751 ( 1227004) 68:12:01 adr: 1 control: 0 mode: -1
>
> > I got a spew of errors relating to low-level disk issues such as
> > sector numbers, etc and it finally gave up and never mounted.
>
> Mind to share a few examples of such messages ?
Not a bit. Here are 7 lines minus all the uninteresting stuff like pid number,
etc:
sr 1:0:1:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sr 1:0:1:0: [sr1] Sense Key : Illegal Request [current]
Info fld=0x506a2
sr 1:0:1:0: [sr1] <<vendor>> ASC=0xc6 ASCQ=0x2ASC=0xc6 ASCQ=0x2
sr 1:0:1:0: [sr1] CDB: Read(10): 28 00 00 05 06 a2 00 00 02 00
end_request: I/O error, dev sr1, sector 1317512
Buffer I/O error on device sr1, logical block 164689
It looks like it probably can read normally if one skips some of the
control sectors.
Thanks. This is interesting.
