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Q98513: EMM386 Err Msg: Insufficient Memory for UMBs or Virtual HMA

Article: Q98513
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:6.0,6.2,6.21,6.22
Operating System(s): 
Keyword(s): 
Last Modified: 20-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 6.0, 6.2, 6.21, 6.22 
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SYMPTOMS
========

If you are using an AMI or Phoenix BIOS, you may receive the following
EMM386.EXE error message even though you have more than 384 kilobytes (K) of
extended memory:

  Insufficient memory for UMBs or virtual HMA

WORKAROUND
==========

To work around this problem, modify your BIOS CMOS settings to disable "Fast A20
Gating." For more information, contact your hardware vendor.

NOTE: This message may also appear on systems with only 384K of extended memory
if MS-DOS is loaded high. The solution is to exclude 64K from EMM386.EXE to
accommodate loading MS-DOS high.

Additional query words: 6.22 6.00 6.20 fast gate fastgate Compuadd + plus 1.10 2/22/91

======================================================================
Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600
Version           : MS-DOS:6.0,6.2,6.21,6.22

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