Q72187: Error Removing SUBSTed Directories

Article: Q72187
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:4.x,5.0
Operating System(s): 
Keyword(s): 
Last Modified: 17-DEC-2000

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 4.0, 4.01, 5.0 
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SUMMARY
=======

When attempting to delete a directory that has been made into a virtual drive,
using the SUBST command from MS-DOS Shell that came with MS-DOS versions 4.0,
4.01, 4.01a, and 5.0, you get the following message:

  System integrity violated. You should exit.

If the directory has been SUBSTed, the message itself is an error in Shell, and
you can continue working within the shell without having to exit.

MORE INFORMATION
================

If the error occurs when deleting a directory, do the following:

1. If you know for sure that the directory has been SUBSTed, the error can be
  ignored. However, the directory still needs to be unSUBSTed before it can be
  deleted. See step 2c.

2. If you are not sure if the directory has been SUBSTed, do the following:

  a. Exit Shell immediately.

  b. Type "SUBST" (without the quotation marks) at the command line. This will
     list all the SUBSTed directories.

  c. If the directory in question is present, it first has to be unSUBSTed
     before it can be deleted. Type "SUBST <DRIVE>:/D" (without the
     quotation marks) at the command line to unSUBST. You can now return to
     Shell and delete the directory.

  d. If the directory in question is not in the SUBST list, system integrity
     has indeed been violated, and you should immediately reboot your system.

This error occurs because the C-runtime sets _dos_errno to EBUSY, which Shell
cannot interpret. It, therefore, maps that error number to the message "System
Integrity Violated...".

There is an analogous error when trying to remove a SUBSTed directory from the
command line. The message is the following

  Attempt to remove current directory - <directory>

even though the directory is not your current directory. It is, however, the
current directory for the SUBSTed drive.

Additional query words: 4.00 4.01 4.01a 5.00

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS400 kbMSDOS500 kbMSDOS401
Version           : MS-DOS:4.x,5.0

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