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Re: Bad media?

Andy Polyakov <appro@fy.chalmers.se>'s letzte Worte waren:
> > Is it possible that growisofs can't write on a certain type of media
> > while Nero can? I don't have problems with Nero, but when using
> > growisofs (via k3b) I'm always getting the message
> > 
> > /dev/ide/host0/bus1/target1/lun0/cd: engaging DVD-R DAO upon user
> > request...
> > :-[ PERFORM OPC failed with SK=3h/ASC=73h/ACQ=03h]: Input/output
> > error
> > 
> > even with the very same DVD (simulation failed in k3b but succeded
> > in Nero).
> Even same unit? I mean is it dual-boot system or do you attempt same 
> media in two different burners? Well, it might appear as dumb
> question, but what you say is rather extraordinary, so I have to
> ask...

No, I see that your question is fully ok. Yes, it's dual boot.

> > I usually thought this error message indicates bad media or media
> > that is not supported by the writer's firmware,
> So did I. 3/73/03 stands for "POWER CALIBRATION AREA ERROR" and is 
> considered as "serious offence." What happens if you minimize the 
> recording speed with -speed=1? As for error per se.

Same error - OPC fails even at -speed=1.

> There were couple of 
> reports that skiping OPC [by modifying the code] helps some units, but
> I failed to find any regularity in reports. OPC by itself is poorly 
> documented, so I'm not sure if it's required or "right thing" to do in
> all situations [as discussed at the end of 
> http://fy.chalmers.se/~appro/linux/DVD+RW/-RW/]. A.

I'm a complete loser in patching source code I don't understand, but
what I did is find the line that said
	sperror ("PERFORM OPC",err),
in growisofs_mmc.cpp, commented it out including the following "exit"
line (thought that might me get a bit further - not knowing the tiniest
bit about DVD writing).

That did part of the job (simulation no longer fails (!), the writing
itself still fails with

/dev/ide/host0/bus1/target1/lun0/cd: "Current Write Speed" is
  0.02% done, estimate finish Mon Jul 26 08:58:12 2004
  0.04% done, estimate finish Sun Jul 25 22:56:44 2004
  0.07% done, estimate finish Sun Jul 25 19:55:02 2004
  0.09% done, estimate finish Sun Jul 25 18:08:57 2004
:-[ WRITE@LBA=8d0h failed with SK=3h/ASC=73h/ACQ=03h]: Input/output
:-( write failed: Input/output error
/dev/ide/host0/bus1/target1/lun0/cd: flushing cache

I suppose that's because i messed up the whole OPC thing and didn't turn
it off properly, can someone tell me how to do this correctly? I
recommend a switch in further versions of dvd+rw-tools that allows to
switch off OPC, do you think this is possible? I would love to check
that one out... And I would love to know why Nero doesn't have a problem
with OPC on the very same medium.

After the unsuccessful writing attempt, dvd+rw-mediainfo is still the

INQUIRY:                [SONY    ][DVD RW DRU-500A ][2.1a]
 Mounted Media:         11h, DVD-R Sequential
 Current Write Speed:   4.0x1385=5540KB/s
 Write Speed #0:        4.0x1385=5540KB/s
 Write Speed #1:        2.0x1385=2770KB/s
 Write Speed #2:        1.0x1385=1385KB/s
 Speed Descriptor#0:    00/2298495 R@2.0x1385=2770KB/s
 Speed Descriptor#1:    00/2298495 R@2.0x1385=2770KB/s
 Speed Descriptor#2:    00/2298495 R@2.0x1385=2770KB/s
 Media Book Type:       25h, DVD-R book [revision 5]
 Media ID:              /
 Legacy lead-out at:    2298496*2KB=4707319808
 Media Book Type:       25h, DVD-R book [revision 5]
 Media ID:              /
 Last border-out at:    0*2KB=0
 Disc status:           blank
 Number of Sessions:    1
 State of Last Session: empty
 Number of Tracks:      1
 Track State:           blank
 Track Start Address:   0*2KB
 Next Writable Address: 0*2KB
 Free Blocks:           2298496*2KB
 Track Size:            2298496*2KB

Greetings and thank you for giving that hint


printk("%s: huh ? Who issued this format command ?\n")

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