need more DOS memory

Posted on 1997-11-18
Medium Priority
Last Modified: 2010-04-12
How can I create more memory on a DOS 5.0 system?  There doesn't seem to be a memory management program on the system, unless I just am not recognizing it.  What should I be looking for?

Question by:castello
1 Comment

Accepted Solution

mitchell042997 earned 200 total points
ID: 1016593
What you need to do is stream line your autoexec.bat and config.sys files.  To see how much memory you have currently, at the DOS prompt type:

  mem /c /p

This will show you how much memory is being allocated, how much free memory you have, etc.

You can then take one of two approaches (or do both).  If you are somewhat experienced with computers, you can go in and edit your autoexec.bat, trimming down the TSR's you don't need.  THen go to your config.sys file.  Where you see DEVICE=... , change to DEVICEHIGH=...

DOS comes with a upper memory manager, EMM386.  Type at the prompt:

   help EMM386.EXE

and brush up on what that does.  The second solution, somewhat simpler, is typing:


at the DOS prompt, and letting it do it for you.

In any case, be sure to make backups of autoexec.bat and config.sys before doing any major editing, and make a system diskette (at the prompt, type:  sys a:).  Also, read up on DOS's help files, and read the DOS manual.  (Remember, you can use the mem command to see how much impact any new changes have made (although you need to reboot first, obviously, before you'll note any changes in the memory).  All are helpful sources.  

If all this fails, you can always purchase a DOS memory manager, such as QEMM, which works really, really well.  Hope this helps.  Let me know if you need more info!

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