Microsoft KB Archive/74454

= MS-DOS Shell and the Colorado Tape Backup System =

Article ID: 74454

Article Last Modified on 10/16/2003

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a
 * Microsoft MS-DOS 6.0 Standard Edition

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This article was previously published under Q74454



SYMPTOMS
You have a Colorado Tape Backup on your system, and when you try to exit a program that has been run from MS-DOS Shell, you receive an error message similar to one of the following:

Unable to Load MS-DOS Shell

-or-

Unable to Unload MS-DOS Shell

If you choose the RETRY button you are returned to MS-DOS Shell. If you choose the NO button, you are returned to the MS-DOS command prompt.



CAUSE
According to Colorado Memory Systems, when you load the automatic backup program from the AUTOEXEC.BAT file, it causes a memory conflict with Shell. If its automatic tape backup program is loaded from the AUTOEXEC.BAT file, it does not leave enough memory for Shell to operate properly.



WORKAROUND
A workaround for this problem is to load the automatic tape backup program from the MS-DOS command prompt, instead of the AUTOEXEC.BAT file.



MORE INFORMATION
The product included here is manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this products' performance or reliability.

Additional query words: 5.00 6.00

Keywords: KB74454

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