NOTE 1: IDE, E-IDE, ATAPI and UltraDMA are all essentially the same and will
        be referred to collectively as "IDE" in this article. 
 
NOTE 2: The CMOS Setup Utility mentioned below may not be the same in all 
        systems.  If necessary, check the documentation that came with your
        system for more information. 
_______________________________________________________________________________

In Windows 95 an IDE CD-ROM drive must be connected to the system through 
the IDE interface.  These are listed under Hard Disk Controllers in the
Windows Device Manager.

There are two IDE "channels" in a typical PC, the Primary IDE Controller 
and the Secondary IDE Controller.  Most PC's have their hard drive connected 
to the Primary Controller and their CD-ROM or DVD drives connected to the 
Secondary IDE Controller. 

In some rare cases, a Secondary IDE Controller may not be available for you 
to connect your IDE/ATAPI CD-ROM.  In such cases, you will need to manually 
install the Secondary IDE Controller in your system. 
_______________________________________________________________________________

To determine whether or not the proper drivers are installed: 

  1) Look under Device Manager's "Hard Disk Controllers" entry

  2) You should see a listing for Intel 82371xx PCI Bus Master IDE Controller
     (some other systems may have a different controller, such as "VIA Bus 
     Master IDE Controller"). 

     If the only other listing under Hard Disk Controllers is 
     "Primary IDE Controller (dual fifo)": 

     a) Shut down and reboot the system. 

     b) Press the [Delete] key when the BIOS screen comes up.  This should 
        open your motherboard's CMOS Setup Utility. Certain systems use a
        different key to access the CMOS Setup Utility.  
        Check the documentation that came with your system for information. 

     c) Go to the INTEGRATED PERIPHERALS page in the CMOS Setup Utility.  
        Make sure both the ONBOARD IDE CONTROLLER 1 (Primary) and ONBOARD IDE
        CONTROLLER 2 (Secondary) are enabled.  
         
     d) Save your changes and close the CMOS Setup Utility. 

     e) Reboot the system. 

     f) Windows Plug 'n Play should automatically detect the newly activated
        Secondary IDE Controller and prompt for the Windows CD-ROM.  Follow 
        the prompts to install the Secondary IDE Controller. 

  3) If you see two controllers already there, and neither has a yellow (!) 
     to the left of it in the list, and the CD-ROM drive still does not appear
     on the system, then the drive or cable is at fault.  To determine which 
     one is causing the problem, replace the cable, or move the drive to 
     a known working port (like the Primary Slave position) and see if 
     it works there.


_______________________________________________________________________________