Microsoft KB Archive/100308

= Disk Errors with EMM386.EXE on Laptop Computers =

Article ID: 100308

Article Last Modified on 11/19/1999

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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 Q100308



SYMPTOMS
If your laptop has a "suspend/resume" feature to save power, you may receive error messages similar to the following with MS-DOS EMM386.EXE version 4.45:  

Serious disk error has occurred

-or-

 

Segment Load Failure (in Windows-based applications)





CAUSE
This error is usually caused by an interaction between the laptop power manager feature and EMM386.EXE.



WORKAROUND
To work around this problem, do the following:  Try to determine if there is a region that needs to be excluded from upper memory blocks (UMBs) to allow the laptop power management to work with EMM386.EXE version 4.45.

This information may be available in your laptop manual. As an alternative, you can exclude the A000-EFFF memory range to test for a UMB conflict. For example:

device=c:\dos\emm386.exe noems x=a000-efff

 If the problem occurs only with MS-DOS 6 EMM386.EXE version 4.45 and cannot be corrected with the above step, use the version of EMM386.EXE that came with the laptop.

NOTE: If you do this, you cannot use MemMaker. Remove EMM386.EXE to see if the problem is related to using EMM386.EXE.</li></ol>

Safari 386 Notebook
The following changes may be needed on a Safari 386 Notebook after installing MS-DOS 6.0 or 6.2 and running MemMaker: <ol> Revert to the Windows version 3.1 EMM386.EXE file.</li> Exclude the A000-C7FF range by adding the following to the CONFIG.SYS file:

device=c:\windows\emm386.exe x=a000-c7ff

</li></ol>

Do not use EMM386.EXE version 4.45, and do not add HIGHSCAN or NOEMS statements to the DEVICE line for EMM386.EXE (in your CONFIG.SYS file). The Safari product included here is manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Additional query words: 6.22 6.20 6.00 advanced power management safari apm standby

Keywords: KB100308

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