[showtaper]

Need you to check/verify a couple of things.

Are both of your drives internal? They look like:

WDC WD20 20 gig internal??
WDC WD12 120 gig internal??

DVDRW USC 16X A089 IO magic external burner??

If so, where do the files reside that you are trying to burn?? If they are
on the WDC WD12, they are on the same bus and you may be having I/O
conflicts.

If you have room, try burning a disc from files on the WDC WD20 hard
drive as it uses a different bus. This may reveal the problem. Running
Nero's utilities (they are in the Nero Toolkit) can reveal a lot more about
your system and how it is interfacing with your drive. We'll go there if
you cannot burn files from the other hard drive.

Have you tested your USB interface??

I don't have as much experience with external burners, the two I briefly
owned were nothing but trouble. A couple of the forums I read are filled
with questions concerning external drives (IO magic in particular).......