Dell NX-20 Requires HIMEM.SYS /M: 1 (80746)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
• 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 Q80746
Your Dell NX20 Notebook computer displays the following error message:
Dell has confirmed that HIMEM.SYS may default to A20 handler number 3
for the Phoenix Cascade BIOS on the Dell NX20. This handler is
incorrect, and results in the error above.
The proper A20 handler for this machine is 1, for IBM PC/AT class
When A20 handler number 3 is installed, SMARTDRV.SYS may not
load when EMM386.EXE and/or DOS=HIGH is also in the CONFIG.SYS file.
Use the following syntax in your CONFIG.SYS file to install the device
driver HIMEM.SYS and to set the correct handler number:
(where drive and path specify the location of HIMEM.SYS).
"Microsoft MS-DOS User's Guide and Reference," version 5.0, pages
Online Help discussion of HIMEM.SYS, version 6.0.
The product included here is manufactured by Dell, a vendor
independent of Microsoft; we make no warranty, implied or otherwise,
regarding this product's performance or reliability.
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