MS-DOS Shell and the Colorado Tape Backup System (74454)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
• Microsoft MS-DOS operating system 6.0
This article was previously published under Q74454
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
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.
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
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.
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.
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