Select the product you need help with
- Internet Explorer
- Windows Phone
- More products
Description of the File System Troubleshooting Options
Article ID: 165503 - View products that this article applies to.
This article was previously published under Q165503
For additional information about this issue in Microsoft Windows 98, Windows 98 Standard Edition, and Microsoft Windows Millennium Edition, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/247485/EN-US/ )Description of Troubleshooting Settings for File System Properties
The System tool in Control Panel contains a set of options for changing file system performance settings. You can use these options when you experience hardware or software compatibility problems.
NOTE: Enabling any of the file system troubleshooting options may seriously degrade system performance.
To display the file system troubleshooting options, follow these steps:
Each option sets a value in the following registry key:
File system option Description ----------------------------------------------------------------------- Disable New File This option alters the internal rules for file Sharing And sharing and locking on hard disks, governing Locking Semantics whether certain processes can have access to open files in certain share modes that guarantee a file will not be modified. This option should be checked only in the rare case that an MS-DOS-based application has problems sharing under Windows 95. This sets SoftCompatMode=0 in the registry. Disable Long Name This option turns off the tunneling feature, Preservation For which preserves long filenames when files are Old Programs opened and saved by applications that do not recognize long filenames. This option should be checked in the rare case that an important legacy application is not compatible with long filenames. This sets PreserveLongNames=0 in the registry. Disable Protected- This option prevents Windows 95 from terminating Mode Hard Disk interrupts from the hard disk controller and Interrupt Handling bypassing the ROM routine that handles these interrupts. Some hard disk drives might require this option to be checked in order for interrupts to be processed correctly. If this option is checked, the ROM routine handles the interrupts, which slows system performance. This sets VirtualHDIRQ=0 in the registry. (This setting is off by default for all computers in Windows 95, which is the reverse of Windows 3.x.) Disable All 32-Bit, This option ensures that no 32-bit disk drivers Protected-Mode are loaded in the system, except the floppy Disk Drivers driver. Typically, you would check this option if the computer does not start due to disk peripheral I/O problems. If this option is enabled, all I/O will go through real-mode drivers or the BIOS. Notice that in this case, all disk drives that are visible only in protected mode will no longer be visible. This sets ForceRMIO=1 in the registry. Disable Write- This option ensures that all data is flushed Behind Caching continually to the hard disk, removing any For All Drives performance benefits gained from disk caching. This option should be checked only in the rare cases where you are performing risky operations and must ensure prevention of data loss. For example, a software developer who is debugging data at Ring 0 while creating a virtual device driver would check this option. This sets DriveWriteBehind=0 in the registry.
Article ID: 165503 - Last Review: November 15, 2006 - Revision: 2.1