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Q75193: Possible CHKDSK Errors with Coherent Partition and MS-DOS

Article: Q75193
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:5.x,6.0,6.2,6.21,6.22
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 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22 
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SYMPTOMS
========

CHKDSK returns an invalid value for total disk space if the Coherent Setup
utility is used to "shrink" a logical DOS partition.

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

Coherent is a UNIX operating system clone. During the installation of Coherent,
the Setup program can shrink the logical DOS partition and create a non-DOS
partition for the Coherent operating system. After this has been done, CHKDSK
will return the size of the extended DOS partition as the sum of the extended
DOS partition and the non-DOS (Coherent) partition.

FDISK will return the correct partition sizes when "Display Partition
Information" is selected.

The problem occurs because Coherent's Setup program only modifies the master boot
record (MBR) entries and not the other linked partition tables or the modified
logical drive boot sectors.

Coherent is produced by:

  Mark Williams Company
  Northbrook, IL
  (708) 291-6700

The product included here is manufactured by vendors independent of Microsoft; we
make no warranty, implied or otherwise, regarding this product's performance or
reliability.

Additional query words: 6.22 5.00 5.00a 6.00 6.20 3rdparty

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a
Version           : MS-DOS:5.x,6.0,6.2,6.21,6.22

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