I went to Services > IMAPI CD...
It is set to Manual.
The choices are Automatic/Manual/Disable
The Description says it manages CD writing.
I did a Win XP Search for "IMAPI" & "Image Mastering" and I got zero hits.
What does this service do in each mode?
How does it effect DVD writing?
I have been getting compare errors when I make a DVD backup of my "C" drive and am wondering if IMAPI CD setting could causing the errors?