Hi Kerry and all! Outstanding post, Kerry; thanks. the person installing still wants to put the cdrw and cdrom on different cables, but I'm concerned about this. If he puts the cdrw as the primary on the second cable, and the cdrom as the slave on the first, that would make the cdrom scd0 and the cdrw scd1. Dooes the cdrw need to be scd0 and should it be a primary/master? Thanks.