Q74636: A20 Hardware Error Installing Windows 3.0 on AST Premium

Article: Q74636
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:5.x
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 
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SYMPTOMS
========

The Microsoft Windows version 3.0 Setup program may hang on disk #2 when you
install Windows under Microsoft MS-DOS version 5.0 on an AST Premium 80386
machine when the message "A20 Hardware Error" is displayed on the screen.

WORKAROUND
==========

If this error occurs, check the CONFIG.SYS file for the line "DOS=high." If it
exists, change it to "DOS=low", and remove any third-party device drivers such
as ASTEMM.SYS. Reboot the machine to have the change take effect.

Begin the Windows Setup program again.

Additional query words: 5.00

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS500 kbMSDOS500a
Version           : MS-DOS:5.x

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