Choosing HIMEM.SYS vs EMM386.EXE for Conventional Memory Optimization in MS‑DOS
Decide whether to load only HIMEM.SYS or combine it with EMM386.EXE to create Upper Memory Blocks, and see how to configure CONFIG.SYS and verify the result.
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msdosFreeing Conventional Memory in MS‑DOS with HIMEM.SYS and Upper Memory Blocks
Learn how to free MS‑DOS conventional memory by loading device drivers into upper memory blocks with HIMEM.SYS and DOS=UMB, complete with a worked example and verification steps.
Diagnosing and Fixing Conventional Memory Exhaustion in MS-DOS
Learn how to diagnose and fix conventional memory exhaustion in MS-DOS by adjusting CONFIG.SYS, loading HIMEM.SYS and EMM386.EXE, and using DEVICEHIGH/LOADHIGH.