Microsoft KB Archive/109527

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

Article ID: 109527

Article Last Modified on 9/29/1999

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APPLIES TO


 * Microsoft Windows for Workgroups 3.11

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This article was previously published under Q109527



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 query words: 311 vfat remove MWUNDEL.EXE mwundelete

Keywords: KB109527

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