MS-DOS Compatibility Mode HELP

n8in99

Member
Jun 18, 2001
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I am receiving the following messages under my System Performance window:

Compatibility Mode Paging reduces overall system performance
Drive C is using MS-DOS compatibility mode file system


Windows says that it is an error in my config.sys, but I've tried everything with this file and no luck.

Any help very much appreciated.
 

c0rv1d43

Senior member
Oct 1, 2001
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I'd suggest that you start here and then come back if you don't find what's causing the problem. MS-DOS Compatibility Mode can be caused by real mode drivers, boot sector viruses, all sorts of stuff. If you post back, you should actually list for us the contents of your CONFIG.SYS and AUTOEXEC.BAT files and tell us the exact version of Windows you're running. Also tell us what devices and / or software you added to the system before the problem began. And check the Device Manager to see if any devices are showing up as being disabled or not functioning properly.

- Collin
 

n8in99

Member
Jun 18, 2001
43
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AUTOEXEC.BAT

REM Added by Pervasive.SQL 2000 install:
SET PERVASIVE_PATH="C:\PVSW\BIN"

REM Added by Pervasive.SQL 2000 install:
@REM SET VSL=C:\PVSW\BIN
@ECHO OFF
SET BLASTER=A220 I7 D1 H7 P330 T6
SET SBPCI=C:\SBPCI

REM [Header]

REM [CD-ROM Drive]
C:\WINDOWS\COMMAND\MSCDEX /D:MSCD001

REM [Miscellaneous]

REM [Display]

SET PATH=C:\WINDOWS\SYSTEM\WBEM;%PATH%;C:\UNITY
REM Added by Pervasive.SQL 2000 install:
SET PATH="C:\PVSW\BIN;%PATH%"


CONFIG.SYS

DEVICE=C:\WINDOWS\HIMEM.SYS
DEVICE=C:\WINDOWS\EMM386.EXE NOEMS
REM [Header]



REM [CD-ROM Drive]
DEVICE=C:\CDROM\SSCDROM.SYS /D:MSCD001 /PIO

REM [Miscellaneous]

REM [Display]

DEVICEHIGH=c:\windows\setver.exe
DEVICEHIGH=C:\WINDOWS\COMMAND\DRVSPACE.SYS /MOVE


I haven't installed anything new that I can see causing this problem. I've tried a number of things to fix it and haven't had any luck yet.

WINDOWS 98SE 4.10.2222 A

 

c0rv1d43

Senior member
Oct 1, 2001
737
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0
You need to go through that Microsoft Knowledge Base article point-by-point. If you need help here, you need to provide all of the data that was requested (and possibly even more). If we start taking pot-shots at the problem based on the information we have so far we could exchange a lot of messages without getting to the bottom of your problem. The MSKB article, if you follow it very carefully through every step, should help you find the cause of the compatibility mode problem.

I can see from your CONFIG.SYS and AUTOEXEC.BAT file that you are loading a real mode driver for a CD-ROM drive. I suspect that you don't need that driver to be loaded. You can place "REM " (That's REM and a space character, but without the quotes.) at the beginning of this line in your CONFIG.SYS file

DEVICE=C:\CDROM\SSCDROM.SYS /D:MSCD001 /PIO

so that it reads

REM DEVICE=C:\CDROM\SSCDROM.SYS /D:MSCD001 /PIO

and at the beginning of this line in your AUTOEXEC.BAT file

C:\WINDOWS\COMMAND\MSCDEX /D:MSCD001

so that it reads

REM C:\WINDOWS\COMMAND\MSCDEX /D:MSCD001

and then reboot the system to see if your CD-ROM drive still works. If it does, then you should leave those lines REMmed out. (You might need to restore them if you need to boot to "true DOS" and still have access to the CD-ROM drive.)

But go through that MSKB article, and check your Device Manager. There are a LOT of possible causes for this, but following the procedure in that article will allow you to narrow it down to the actual culprit.

- Collin
 

n8in99

Member
Jun 18, 2001
43
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I fixed it!

What I did is downloaded the Intel chipset Ultra ATA controller driver and reinstalled my Primary and Secondary Ultra ATA controller, and that worked. I did REM out the Config.sys and Autoexec.bat and that disabled the real mode driver.

Thank You very much for your help.

Nate
 

c0rv1d43

Senior member
Oct 1, 2001
737
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0
Outstanding news! See? I knew you could fix it better than a bunch of us taking pot-shots!!!

:D

I'm glad it worked out for you. And you're welcome to whatever little help I might have provided.

- Collin