MS-DOS Upgrade Setup Doesn't Detect @ Symbol in AUTOEXEC.BAT (103537)

The information in this article applies to:
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.21
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q103537


If a command in your AUTOEXEC.BAT file has a leading at sign (@), MS-DOS 6 Upgrade Setup does not analyze the line. For example, if you have "@CALL C:\PCKWIK\SUPERON" in your AUTOEXEC.BAT file, MS-DOS 6 Upgrade Setup does not detect the PC-KWIK cache. As a result, you end up with two disk caches loaded at the same time.

NOTE: This problem does not occur with MS-DOS 6.2 Upgrade Setup because it correctly analyzes lines with leading @ signs. However, during the updating of your AUTOEXEC.BAT file, the @ sign is removed.


Microsoft does not recommend running two disk caches; be sure to disable one before you run Setup. To disable PC-KWIK, edit the AUTOEXEC.BAT file with an ASCII text editor, such as MS-DOS Editor, and add the remark statement (REM) in front of the command for PC-KWIK. For example:
   rem @call c:\pckwik\superon

Modification Type: Major Last Reviewed: 11/22/1999
Keywords: KB103537