ATAPI CD-ROM Drive Not Accessible with PCMCIA Devices

Last reviewed: July 26, 1995
Article ID: Q133184

The information in this article applies to:

Microsoft Windows NT Workstation versions 3.51
Microsoft Windows NT Server versions 3.51

SYMPTOMS

After you upgrade or install Windows NT 3.51 on a laptop computer with two enhanced IDE (EIDE) controllers and an ATAPI-compatible CD-ROM drive, the following system event appears in the Event Viewer:

   Event: 9
   Source: ATAPI
   Type: Error
   Description: The device \Device\ScsiPort0 - did not respond within
                the timeout period.

The CD-ROM icon is not available in File Manager.

CAUSE

This problem occurs when the secondary EIDE controller (used for the CD- ROM) and a PCMCIA card are configured with the same IRQ.

Some PCMCIA cards (type I, II, or III) are shipped with the IRQ configured for IRQ 15. Some EIDE controllers, by default, are also set to IRQ 15.

RESOLUTION

To correct this problem:

Verify that the CD-ROM drive operates:
a. Remove all drivers for the PCMCIA cards.
b. Turn off your computer and remove all PCMCIA cards.
c. Restart Windows NT and verify that the CD-ROM drive icon appears
```
      in File Manager. If the CD-ROM drive icon does not appear in
      File Manager, contact your CD-ROM drive manufacturer.
```
If you have already installed the drivers for the PCMCIA cards, change the IRQ to another unused IRQ. If not, install the driver for an unused IRQ.
Turn off your computer and insert all PCMCIA cards.
Restart Windows NT.

The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

KBCategory: kb3rdparty kbhw
KBSubcategory: nthw ntconfig
Additional reference words: 3.51 prodnt time-out

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Last reviewed: July 26, 1995
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