Disk Errors with EMM386.EXE on Laptop Computers (100308)
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 Q100308
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
This error is usually caused by an interaction between the laptop
power manager feature and EMM386.EXE.
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:
• 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.
device=c:\dos\emm386.exe noems x=a000-efff
NOTE: If you do this, you cannot use MemMaker.
• Remove EMM386.EXE to see if the problem is related to using
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:
• Revert to the Windows version 3.1 EMM386.EXE file.
• Exclude the A000-C7FF range by adding the following to the
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.
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