To copy files from another CD or DVD drive the Rich unit, it is better to put the two drives on separate drive controllers. IDE controllers can't interleave reading and writing to drives in the same controller and you are less likely to suffer the writing error known as buffer under-runs if have the drive working from separate controllers What does this mean? How do you separate the drive controllers?

Most motherboards come with at least two, and sometimes four, IDE channels. Putting the source drive on one (i.e. connecting the cable to one motherboard connector) and the writer on another will solve most problems.