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how can i free up conventional memory in MS-DOS mode?

Posted on 1998-11-08
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Last Modified: 2013-12-16
I have a DOS program that requires around 565k of conventional memory to run.  How can I free that much up in MS-DOS mode?  All I need is the CD-ROM (drive F: for me), a mouse and my sound card.  I have tried using the advanced settings for specifying a new MS-DOS specification, but the attempt was unsuccessful.  Appreciate input on this one.
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Question by:lyndonbraun
7 Comments
 
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by:bchew
ID: 1759212
Are you re-booting to dos mode or just using a dos box from Win95?  The settings you describe above are for the dos box.  If you are restarting in Dos Mode, you need to set up your config.sys and autoexec.bat file with ONLY the dos mode drivers you need and memory management (emm386, load dos high, loadhigh's on your drivers, etc.)
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Expert Comment

by:zewl
ID: 1759213

From DOS, run the 'memmaker' command and it will step you through memory reconfig to free up conventional memory.
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Expert Comment

by:bchew
ID: 1759214
Zewl,
He is running DOS MODE in WIN95, not DOS!!! Memmaker doesn't exist in WIN95 DOS MODE.  If it were that simple, I would have included it in my comment.  If lyndonbraun needs help implementing my suggestion is would bet (s)he will ask for it.
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Author Comment

by:lyndonbraun
ID: 1759215
Win95 does not make use of memmaker in it's MS-Dos mode.
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Author Comment

by:lyndonbraun
ID: 1759216
By the way, bchew,
the setup I was talking about is only available when Windows95 shuts down and restarts in MS-DOS mode.  The options are to use a Dos box or restart, and there is a place (the advanced settings when the properties for the shortcut are displayed, in the Program tab) to specify a new, customized, autoexec.bat and config.sys for just that program (i assume).  FYI - i have 3 hard drives (C, D, & E) and a CD-Rom (F).  Nothing else is too out of the ordinary.
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Expert Comment

by:bchew
ID: 1759217
What have you tried in these customized files?  Could you post both here so we can help you troubleshoot them?  Also, some dos programs won't work at all from the dos box so you need to do a restart in dos mode with the actual autoexec.bat and config.sys files configured for your program, including memory management.

Thanks,
Bert.
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Accepted Solution

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chewhoung earned 100 total points
ID: 1759218
I've 608K conventional mem.
here is my config.sys

DEVICE=C:\WINDOWS\SETVER.EXE
DEVICE=C:\WINDOWS\HIMEM.SYS
DEVICE=C:\WINDOWS\EMM386.EXE RAM
DEVICE=C:\WINDOWS\SMARTDRV.EXE
DOS=HIGH, UMB
FCBS=16,8
FILES=90
SHELL=C:\COMMAND.COM C:\ /P /E:2048




and autoexec.bat file:

@ECHO OFF
PROMPT $p$g
SET TEMP=C:\TEMP
C:\WINDOWS\SMARTDRV.EXE
lh C:\WINDOWS\COMMAND\DOSKEY
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