Registry Home > Windows > File System

Configure 32-bit Protected Mode IO Drivers (Windows 95/98/Me)

This setting controls whether fixed disk access is performed through Windows protected mode drivers or through real mode drivers and BIOS routines. If you are experiencing drive IO errors enabling this setting may be a possible solution.

This tweak can be easily applied using WinGuides Tweak Manager.
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Open your registry and find or create the key below.

Create a new Binary value, or modify the existing value, called "ForceRMIO" and set it according to the value data below.

Exit your registry; you may need to restart or log out of Windows for the change to take effect.

Registry Editor Example
|NameTypeData|
|(Default)REG_SZ(value not set)|
|ForceRMIOREG_BINARY00 00 00 00|
-
|HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\FileSyst...|
-
Registry Settings
System Key: [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\FileSystem]
Value Name: ForceRMIO
Data Type: REG_BINARY (Binary Value)
Value Data: (00 00 00 00 = protected mode, 01 00 00 00 = real mode)

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Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last modified: March 28, 2002