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Re: Write problems with unbranded DVD[+-]RW drive...

Joerg Schilling <schilling@fokus.fraunhofer.de>MacArthur, Ian (UK) wrote:

Hi Jörg,

As this happens after 1 MB (<= than the RAM size) it may be a buffer underrun. Check transfer speeds..... It however looks like the drives does not like the medium. Call cdrecord -atip

Hmm, I'm not sure - I managed to burn several of these disks using growisofs, and then mount the disks on my Mac (as well as on this linux box) so I *think* the media are OK?

Anyway, attached is the output from "cdrecord-ProDVD dev=0,0,0 -atip" and it doesn't look good... although I'm not sure what it is telling us.

BTW: Are there any "dangers" with using the "-atip" option?

Since I used it, I haven't been able to mount *any* DVD media on this drive - it was working OK before (I had been checking through the backups I made on Wed. to make sure they were *still* OK) but after trying the -atip test I now can't access *any* DVD on this drive...
not even DVD-ROM or movies.
I *can* still mount CD's though.

It's probably just a coincidence, but I thought I'd better ask in case there were any known issues, as at present my *cheap* DVD burner has turned in to an *expensive* CD reader...
Which is inconvenient, to say the least!

Thanks again. Cheers for now, -atip output attached,

I have to say that this looks almost identical to the problems (no/wrong disk) I had with my Pioneer before I upgraded the firmware. After upgrade the problems all went away. Unfortunately you may not be able to get an upgrade for this drive, unless you can find out who made it.

root@immpc3 /root # cdrecord-ProDVD dev=0,0,0 -atip
Cdrecord-ProDVD-Clone 2.01a12 (i586-pc-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling
Unlocked features: ProDVD Clone
Limited  features:
This copy of cdrecord is licensed for: private/research/educational_non-commercial_use
scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Linux sg driver version: 3.1.20
Using libscg version 'schily-0.7'
Device type    : Removable CD-ROM
Version        : 0
Response Format: 1
Vendor_info    : 'DVDRW   '
Identifikation : 'IDE1004         '
Revision       : '0040'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
/home/ian/src/cdrecord-prodvd-2.01a12-i586-pc: Input/output error. test unit ready: scsi sendcmd: no error
CDB:  00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 02 00 00 00 00 0A 00 00 00 00 3A 01 00 00
Sense Key: 0x2 Not Ready, Segment 0
Sense Code: 0x3A Qual 0x01 (medium not present - tray closed) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.000s timeout 40s
/home/ian/src/cdrecord-prodvd-2.01a12-i586-pc: No disk / Wrong disk!
root@immpc3 /root #

E. Robert Bogusta
 It seemed like a good idea at the time

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