Microsoft KB Archive/121926

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Second CD-ROM Drive Not Detected in Windows 95

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Q121926

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The information in this article applies to:


 * Microsoft Windows 95

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SYMPTOMS
When you install Windows 95 on a system with two CD-ROM drives, one of the CD-ROM drives is not detected.

CAUSE
This problem occurs when Windows 95 loads protected-mode drivers for one of the CD-ROM drives and the second CD-ROM drive is running with real-mode drivers loading in the CONFIG.SYS and AUTOEXEC.BAT files. Windows 95 assumes that the real-mode and protected-mode drivers reference the exact same drive; therefore, it assigns the drive letter for the protected-mode drive to be the same as the existing real-mode drive letter.

RESOLUTION
Assign the CD-ROM drive running in protected mode to a different drive letter.

You can change the drive letter of a CD-ROM drive by performing the following steps:


 * 1) Click the Start button, point to Settings, and then click Control Panel.
 * 2) Double-click the System icon, then click the Device Manager tab.
 * 3) Select the CD-ROM you want to change from the list, then click the Properties button.
 * 4) Click the Settings tab.
 * 5) In the Reserved Drive Letters section, set Start Drive Letter and End Drive Letter to the drive letter you want the CD-ROM to use. Click the OK button.
 * 6) Click the Start button on the taskbar and click Shut Down. Then click Restart The Computer.

The CD-ROM drive letter should now be the letter you selected and the second CD-ROM should be accessible.

To change the drive letter of the CD-ROM using MSCDEX, use the MSCDEX /L: switch on the MSCDEX line in the AUTOEXEC.BAT file. For example, inserting a /L:E on the MSCDEX line would change the drive letter of the of the CD-ROM using MSCDEX to E.

Additional query words: cdrom protected mode

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Technology : kbWin95search kbWin95