Microsoft KB Archive/98513

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

Article ID: 98513

Article Last Modified on 11/20/1999

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APPLIES TO


 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q98513



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 &quot;Fast A20 Gating.&quot; 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: KB98513

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