Second CD-ROM drive not detected by Windows 95 due to real-mode drivers.
Cause:
One CD-ROM drive uses real-mode drivers; the other CD-ROM drive uses protected-mode drivers. Windows 95 assumes that both the real- and protected-mode drivers are for the SAME CD-ROM drive when it starts. Both CD-ROM drives are assigned the same drive letter, and ONLY the CD-ROM drive that uses protected-mode drivers is visible.
Solution:
In the 'Control Panel' window, double-click the 'System' icon and double-click 'CDROM'. Double-click the appropriate CD-ROM device and click the 'Settings' tab. Assign the CD-ROM drive a new drive letter name and click 'OK' twice.
NOTE: It may not be possible to configure Windows 95 to accept two CD-ROM drives while one drive is using a real-mode driver.
1) Click the 'Start' button to display the 'Start' menu.
2) Select 'Settings' and select 'Control Panel'. (The 'Control Panel' window appears.)
'Control Panel' option
3) Double-click the 'System' icon. (The 'System Properties' dialog box appears.)
The 'System' icon
4) Click the 'Device Manager' tab. (The 'Device Manager' tabbed page appears.)
5) Double-click 'CDROM' to expand the branch.
6) Select the CD-ROM and click 'Properties'. (The '<device> Properties' dialog box appears, where <device> is the name of the selected CD-ROM device.)
The 'Properties' button
7) Click the 'Settings' tab. (The 'Settings' tabbed page appears.)
8) Select the drive letter to use from the 'Start drive letter' drop-down list in the 'Reserved drive letters' group.
9) Select the same drive letter as the one selected in step 8) from the 'End drive letter' drop-down list in the 'Reserved drive letters' group.
The 'Reserved drive letters' group
NOTE: Be sure to select a drive letter which is different than ALL other drives installed on the computer, including network drives.
10) Click 'OK' to close the '<device> Properties' dialog box (where <device> is the name of the selected CD-ROM device).
11) Click 'OK' to close the 'System Properties' dialog box.
12) Select the 'File' menu and select 'Close' to close the 'Control Panel' window.
13) Click the 'Start' button to display the 'Start' menu and select 'Shut Down...'. (The 'Shut Down Windows' dialog box appears.)
14) Select the 'Restart the computer' radio button and click 'Yes'.
