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Article ID: 192835 - Last Review: January 7, 2015 - Revision: 1.2

This article was previously published under Q192835
This article has been archived. It is offered "as is" and will no longer be updated.
If this article does not describe the error message that you are receiving, view the following Microsoft Knowledge Base article to view more articles that describe error messages:
315854  ( ) Windows 98 and Windows Me Error Message Resource Center


When you use the Copy Disk command in My Computer or Windows Explorer, you may receive the following error message after you insert the destination disk and click OK:
Fatal Exception 0D has occurred at <address> in VxD V86MMGR (01)+

In addition, the Performance tab in the System tool in Control Panel may indicate that your floppy drives are using MS-DOS Compatibility mode.


This behavior can occur if the Hsflop.pdr file is missing or damaged.


To resolve this behavior, follow these steps:

  1. Click Start, point to Find, and then click Files Or Folders.
  2. In the Named box type "hsflop.pdr" (without quotation marks), and then click Find Now.
  3. If the Hsflop.pdr file is found, right-click it, click Rename, and then type a new name for the Hsflop.pdr file (such as

    If the Hsflop.pdr file is not found, skip to step 4.

    For more information about how to rename a file, click Start, click Help, click the Index tab, type "renaming" (without quotation marks), and then double-click the "Renaming Files" topic.
  4. Quit the Find tool.
  5. Use the System File Checker tool to extract a new copy of the Hsflop.pdr file from your original Windows 98 disks or CD-ROM to the <drive>:\windows\system\iosubsys folder, where <drive> is the drive on which you installed Windows 98, and <windows> is the folder in which you installed Windows 98.

    For more information about how to use the System File Checker tool to extract files, please see the following article in Microsoft Knowledge Base:
    ARTICLE-ID: 129605  ( )
    TITLE : How to Extract Original Compressed Windows Files
To work around this behavior, type the following command at a command prompt and then press ENTER
diskcopy <source drive>: <destination drive>:

where <source drive> is the drive from which you are copying files, and <destination drive> is the drive to which you are copying files.

  • Microsoft Windows 98 Standard Edition
kbnosurvey kbarchive kberrmsg kbfatalexerr0d kbprb KB192835
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