i have a problem in IDE channel of my PC... in ide1 master is in the hard disk, ide2 master is in my DVD rom/cdwriter and the ide2 slave is cd rom only... but cmos cannot detect the DVDrom instead it only detects the cdrom always... when i unplugged the ide2 slave and the ide2 master is in the DVDrom, it works properly... but when i plugged in both, ide2 (master and slave), it appears that only cdrom is detected by cmos...

DVDrom/cdwriter        LGgcc-h23n
CDrom                        Sony CDU 311

Pls reply asap TY....

First, make sure you are using an 80 conductor IDE cable... then make sure you have the drive at the end of the chain jumped as Master (probably the DVD combo drive) and the CD-ROM jumped as slave.  There should be indicators on the drive to tell you how to set the jumpers.

(in reply to wayfarer28)