Hi Thomas, Hi Bill,

Thanks for the suggestions.  I'm still unable to burn DVD+RW's with growisofs 
and suspect a bug.

> > Burned or not burned?  dvd+rw-mediainfo can't decide
> 
> Your observations indicate that the drive is
> not able to recognize the media's formatting
> and data content although it did not report
> an error during the write run.
> The media info after writing is explainable
> if the drive cached the formatting info in its
> internal memory until the media got ejected.

Yes, it looks like a drive cache issue.  I'll just eject and re-load to check 
from now on.
 
> It may be that the media shows up as formatted
> and readable in a different drive.

Nope.  Each time they come up as blank on different drives even though they are 
burned without growisofs returning an error.

> For the drive in question you should get media
> from a different manufacturer.

I'm using TDK bought from a major supermarket, not a no-name brand.  TDK 
DVD-RW's burn fine, but TDK DVD+RW's come up empty after burning.  I have tried 
two different burners from different manufacturers, in each case the devices 
support DVD+RW according to the manufacturers.  I have tried on two different 
PCs, with two different releases of ubuntu (8.04 and 8.10).  I have reformatted 
the media with dvd+rw-format /dev/dvd but after burning the DVD+RW's are still 
empty.

Possibilities I'm considering are that I've got a bad batch of media and that 
growisofs is buggy.

If burning fails, growisofs should report it, but some users have found that it 
doesn't always report problems:
https://bugs.launchpad.net/ubuntu/+source/dvd+rw-tools/+bug/59506

Is there a way of burning a dvd that circumvents growisofs?  I don't have 
Windows which would have been handy to check.

Cheers,
Parker

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