I have an Optorite DD1203 DVD burner in an external USB enclosure. It
works fine in Linux using the usb-storage driver, and it behaves as a
SCSI burner.
I am trying to write to DVD+R media. Setting the write speed always fails:
marvin# growisofs -dvd-compat -speed=8 -Z /dev/scd0=image1.iso
:-( Failed to change write speed: 0->11080
This occurs whatever number I put after the -speed= argument, although
the second number in the error message is changed accordingly (so for
speed 2, it says Failed to change write speed: 0->3324). Running
growisofs with no -speed= argument works, however.
Now here's where it gets interesting. If I run growisofs with a speed
argument, let it fail, and then run with no speed argument, it appears
to burn correctly at something close to the speed specified in the
initial argument. So if I put speed=4, then run growisofs -dvd-compat -Z
/dev/scd0=image1.iso, it burns at an average of 3.7x.
I don't know if this is a bug or a feature or something to yell at the
manufacturer about or what. Just thought it was worth reporting.
David
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