32-Bit File Access ErrMsg: Exit Windows and Run the MS-DOS...

 Last reviewed: May 17, 1995
Article ID: Q109527
The information in this article applies to:
  • Microsoft Windows for Workgroups version 3.11

SYMPTOMS

When you run an application (such as Microsoft Undelete) under Windows for Workgroups version 3.11, you may receive the following error message: 

   Exit Windows and run the MS-DOS version of this utility.
   Interrupt 26 (Direct sector write) blocked to preserve volume integrity.
NOTE: If you run Microsoft Undelete and choose Find to search for deleted files, Undelete may display the following error message: 

   System Error
   Divide by zero or Overflow error

CAUSE

This problem occurs when you run any application or utility that calls interrupt 26 (such as Microsoft Undelete) when 32-bit file access is enabled.

WORKAROUND

To work around this problem either:

  • Disable 32-bit file access.

    -or-

  • Run the MS-DOS-based version of the application that is calling interrupt 26.

NOTE: Microsoft recommends that you do not run MS-DOS-based disk utilities from the Windows for Workgroups MS-DOS Prompt. These utilities should be run before or after your Windows for Workgroups session.

KBCategory: kbtool kbdisplay kbenv kberrmsg
KBSubcategory: wfw wfwg
Additional reference words: 311 vfat remove MWUNDEL.EXE mwundelete

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Last reviewed: May 17, 1995
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