KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q139846: Floppy Disk Drive Letters Not Swapped in Windows 95

Article: Q139846
Product(s): Microsoft Windows 95.x Retail Product
Version(s): 95
Operating System(s): 
Keyword(s): diskmem win95 kbDiskMemory
Last Modified: 28-JUL-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows 95 
-------------------------------------------------------------------------------

IMPORTANT: This article contains information about editing the registry.
Before you edit the registry, you should first make a backup copy of the
registry files (System.dat and User.dat). Both are hidden files in the
Windows folder.

SYMPTOMS
========

If you change the drive letters assigned to floppy disk drives in your
computer's CMOS setup utility, the drive letters may not be changed correctly in
Windows 95. When you try to access the A or B drive, the wrong floppy disk drive
may be accessed. Note that this problem does not occur if you boot to a Windows
95 command prompt or to your previous operating system.

CAUSE
=====

This problem can occur if the method used by your computer to swap floppy disk
drive letters is different than the method used by most computer, and is not
recognized by Windows 95.


RESOLUTION
==========

NOTE: For information about how to edit the registry, view the Changing Keys And
Values online Help topic in Registry Editor (Regedit.exe). Note that you should
make a backup copy of the registry files (System.dat and User.dat) before you
edit the registry.

WARNING: Using Registry Editor incorrectly can cause serious problems that may
require you to reinstall Windows 95. Microsoft cannot guarantee that problems
resulting from the incorrect use of Registry Editor can be solved. Use Registry
Editor at your own risk.

To resolve the problem described in this article, remove the Int13ToDrvSelMap
value under the following registry key, and then restart your computer:

  Hkey_Local_Machine\System\CurrentControlSet\Services\Class\Fdc\0000

======================================================================
Keywords          : diskmem win95 kbDiskMemory 
Technology        : kbWin95search kbZNotKeyword3
Version           : 95

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.