Installing A CD ROM drive In Windows NT

If the IDE CDROM port set on the sound card is either Tertiary or Quaternary port, then change the IDE I/O address on the sound card to secondary port i.e. 170,15.
If you have an Enhanced IDE controller on your motherboard, then disable the secondary IDE port on the motherboard through the software BIOS CMOS setting, or use the jumpers selection on the motherboard. Make sure the IDE setting on the sound card is set to secondary port, i.e. 170,15.
Check that your IDE CDROM drive is set to 'Master' mode and NOT 'Slave' mode if it is the first device on the IDE controller, e.g. connected to SB16 IDE card.
If you own a Creative CR563 or CD200 drive, make sure that the I/O address of the sound card used is set at 220Hex.