Installed Liteon LSC Slim Combo drive in Toshiba Tecra 9100. Dual OS (Win2k and XP) with PartitionMagic boot. Get IDE 1 error on boot. OS boots anyway. Win2k device manager shows no CD drive. There are two ways to get it to work 1) Remove and re-insert while hot - Win2k will find new hardware and install; 2) Delete and re-install secondary IDE channel - Win2k will find and install. However on next boot -same failure - IDE 1 error and no CD drive.