Computer hangs when copying data from CD-ROM drive due to controller speed.
Cause:
Copying a large directory structure from a CD-ROM drive to a local hard disk may cause the computer to stop responding. The Windows 95 CD-ROM file system, with protected-mode drivers, has a 'Read Ahead' feature to provide smoother video playback, with faster, more efficient data-streaming. This can cause the CD-ROM drive controller to be driven at speeds faster than it was designed for.
Solution:
A local reboot is necessary to end the copy task and regain control of the computer.
1) Click the 'Start' button to display the 'Start' menu.
2) Select 'Settings' and select 'Control Panel'. (The 'Control Panel' window appears.)
'Control Panel' menu item
3) Double-click the 'System' icon. (The 'System Properties' dialog box appears.)
The 'System' icon
4) Click the 'Performance' tab and click 'File System...' in the 'Advanced settings' group. (The 'File System Properties' dialog box appears.)
5) Click the 'CD-ROM' tab.
6) In the 'Optimize access pattern for' drop-down list box, select the setting that matches the CD-ROM drive being used.
NOTE: Consult the documentation that came with the CD-ROM drive to find the manufacturer's recommended setting.
7) Click 'Apply' to change the setting.
8) Click 'OK' to close the 'File System Properties' dialog box.
9) Click 'Close' to close the 'System Properties' dialog box. (The 'Systems Settings Change' dialog box appears.)
10) Click 'Yes' to restart the computer.
11) If steps 1) through 10) do not solve the problem, repeat steps 1) through 6), but in the 'Optimize access pattern for' drop-down list box, select 'No read-ahead'.
12) Click 'Apply' to change the setting.
13) Click 'OK' to close the 'File System Properties' dialog box.
14) Click 'Close' to close the 'System Properties' dialog box. (The 'Systems Settings Change' dialog box appears.)
15) Click 'Yes' to restart the computer.
16) To close the 'Control Panel' window, select the 'File' menu and select 'Close'.
