The typical mother board has two IDE channels with two devices allowed on each channel, usually referred to as primary and secondary (or sometimes master and slave). The question is: when attaching only one device to a channel, is it necessary to attach it to the primary (or master) connection? Or is it possible to leave that empty and attach one device (such as a CD-ROM drive) to the secondary (slave) connection only? Phil Parker -------------------------------------------- URL http://www.math.twsu.edu/Faculty/Parker/ Random quote for this second: Die, v.: To stop sinning suddenly.---Elbert Hubbard Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://nospin.com/pc/pcbuild.html