OSINPLEX - CANNOT ACCESS PLEXTOR 4PLEX CD-ROM DRIVE CONNECTED TO AN
           ADAPTEC 1542C - OS/2 WARP
01/10/96

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       Cannot Access Plextor 4Plex CD-ROM Drive Connected to an
                      Adaptec 1542C--OS/2 Warp
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Please Read Entire Document for Full Explanation of Procedures
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DESCRIPTION

After installation of OS/2 Warp 3.0 from a CD-ROM, the system does not 
recognize the Plextor CD-ROM drive connected to an Adaptec 1542C 
adapter. An AWE sound card also is installed.

The following error message is received:

   Please insert CD-ROM.

OS/2 Warp is still looking for a CD-ROM on the sound card.

RESOLUTION

The Adaptec 1542C adapter is using DMA 5, and the default setting for 
the AWE32 sound card also is DMA 5. Change to different DMA setting.

On the AWE32 sound card, disable the CD-ROM option; then pull the 
Interrupt pin off. This usually is set for Interrupt 9, 10, or 11. When 
the pin is removed, OS/2 Warp will recognize the Plextor CD-ROM drive.

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