Re: [Cdrdao-devel] Attempt to read Mode2 DVD fails

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i can't provide an accurate answer, but it's probably something along
the lines of "it's not supported for DVDs"... Improving DVD support is
certainly at the top of my to-do list, but my knowledge of the DVD
format and MMC extensions is lacking...

-denis

--- David Antliff <dav...@pa...> wrote:

> 
> Hello,
> 
> I posted this on the sourceforge Cdrdao forum but then realised,
> after 
> looking at the number of replies for past messages, that it probably
> won't 
> get much visibility there. So I re-post here in the hope that solving
> this 
> problem might help others (I know of one other person already on 
> forums.gentoo.org who has this same problem) as well as myself.
> 
> I am trying to use cdrdao to read and backup my (legitimate)
> Playstation2 
> game DVDs in Linux (Gentoo, 2.6.11.6). I have tried two different DVD
> 
> drives (a 3 year old Samsung and a brand new LG GSA-4163B) without 
> success. The software seems unable to instruct the drive to reading
> the 
> TOC as a mode2 disk. I'm no expert here at all, but it seems to me
> that 
> the driver is reporting failed capabilities and reverting back to
> mode1, 
> which then fails later. There is a trace of the output from cdrdao 
> included at the end of this email.
> 
> I have tried cdrdao 1.1.9 and 1.2.0. I have tried the generic-mmc and
> the 
> generic-mmc-raw drivers - both exhibit the same behaviour. I have
> tried 
> all the options in the cdrdao README (e.g. --driver generic-mmc:0x3)
> with 
> little success. I have even looked at the source code. Here is where
> it 
> fails (as long as I don't have the :0x10000 option set - see below):
> 
> GenericMMC.cc:2038
> --------------------------------
> // read disk toc length
> memset(cmd, 0, 10);
> cmd[0] = 0x43; // READ TOC
> cmd[2] = 2;
> cmd[6] = sessionNr;
> cmd[8] = 4;
> 
> if (sendCmd(cmd, 10, NULL, 0, reqData, 4) != 0) {
> message(-2, "Cannot read disk toc.");
> return NULL;
> }
> --------------------------------
> 
> A 'normal' DVD (e.g. the installation DVD that came with the drive)
> can be 
> read fine (although it's mode 1). All of my PS2 disks fail (they are
> all 
> mode 2 I think).
> 
> I did find that 'generic-mmc-raw:0x10000' gets rid of the first error
> 
> ("ERROR: Cannot read disk toc.") but it still reverts to MODE 1 and
> then 
> fails in the same way (and obviously somewhere else in the code).
> 
> Most recently I tried using the drive with Nero in Windows to read
> PS2 
> disks, and it works fine.
> 
> Is there anything else I can do to try and work out a fix? Can I
> somehow 
> collect more information on what is happening to assist with finding
> a 
> resolution?
> 
> Thanks in advance for any assistance.
> 
> 
> --- TRACE ------------------------------
> 
> # cdrdao read-cd -v 4 --read-raw --device ATA:1,0,0 --driver 
> generic-mmc-raw gamename.toc
> Cdrdao version 1.2.0 - (C) Andreas Mueller <an...@da...>
> SCSI interface library - (C) Joerg Schilling
> Paranoia DAE library - (C) Monty
> 
> Check http://cdrdao.sourceforge.net/drives.html#dt for current driver
> 
> tables.
> Format converter enabled for extensions: mp3 ogg
> 
> Using libscg version 'schily-0.8'
> Using libscg transport code version 'schily-scsi-linux-sg.c-1.83'
> 
> ATA:1,0,0: HL-DT-ST DVDRAM GSA-4163B Rev: A100
> Using driver: Generic SCSI-3/MMC (raw writing) - Version 2.0 (options
> 
> 0x0000)
> 
> Reading toc and track data...
> getTocGeneric: data len 20
> ERROR: Cannot read disk toc.
> 
> Track Mode Flags Start Length
> ------------------------------------------------------------
> 1 DATA 4 00:00:00( 0) 360:20:52(1621552)
> Leadout DATA 4 360:20:52(1621552)
> 
> Checking for PQ sub-channel reading support (data track)...
> PQ sub-channel reading (data track) not supported.
> Checking for raw P-W sub-channel reading support (data track)...
> Raw P-W sub-channel reading (data track) is not supported.
> Checking for cooked R-W sub-channel reading support (data track)...
> Cooked R-W sub-channel reading (data track) is not supported.
> ERROR: Cannot read sector of track.
> WARNING: Cannot determine mode of data track 1 - asuming MODE1.
> Copying data track 1 (MODE1_RAW): start 00:00:00, length 360:20:52 to
> 
> "data.bin"...
> /home/david/src/cdrdao-1.2.0/dao/cdrdao: Success. : scsi sendcmd: no
> error
> CDB: BE 00 00 00 00 00 00 00 1A F8 00 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 05 00 00 00 00 10 BE F8 00 08 24 00 00 C0
> Sense Key: 0x5 Illegal Request, Segment 0
> Sense Code: 0x24 Qual 0x00 (invalid field in cdb) Fru 0x0
> Sense flags: Blk 0 (not valid) error refers to command part, bit ptr
> 0 
> (not valid) field ptr 0
> resid: 61152
> cmd finished after 0.001s timeout 20s
> ERROR: Read error while copying data from track.
> 
> 
> -- 
> David.
> 
> 
> 
> 
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