>>>>I have a Pentium 100Mhz machine with a 1.2GB super IDE HDD, 16MB of RAM and 1.44MB FDD.
>>>>
>>>>On the Performance page in the System Properties in Control Panel, the File System (in the Performance Status) reads 'Some drives are using MS-DOS compatibility' and the Virtual Memory states 'MS-DOS compatibility mode'.
>>>>
>>>>In the Item Details list on the same page, the first line indicates 'Compatibility mode paging reduces overall system performance.' The next two lines mentions both the drives that I have on the machine, viz. Drive A: and C:. The lines states that the drives are using MS-DOS compatibility mode file system.
>>>>
>>>>As stated in the Windows Help, I checked my startup files, Config.sys and Autoexec.bat, but there are no drivers which Windows might no recognize. The only drive I using is Himem.sys.
>>>>
>>>>Due to this problem, the system performance is reduced drastically. I have similar machines with similar hadware configurations as well as same set of Config.sys and Autoexec.bat files which gives a far better performance. Moreover they do not register this problem.
>>>>
>>>>Can anyone help me out with this?
>>>>
>>>>TIA,
>>>>
>>>>Hardik
>>>
>>>Reinstall Windows 95, sometime ago that worked for me, if not, reformat & reinstall.
>>
>>
>>Scan your disk with a good antivirus for bootsectors virus...
>>
>>:)
>
>I have already done that using McAfee VirusScan. But it didn't detect any.

There is more than one reason for the dos compatibility mode in win95.

You can check:

--If you have a Syquest with no cartridge insert.

--If you use Guest.exe with a ZIP Drive. (install the drivers from win95 CD)

--If your BIOS is old (updating it can resolve your problem)

--Look at the Performance tab, you can see the if it's an old driver(16 bits)
who cause the problem.

--You can also verify the hardware manager tab if all your drives are corectly
installed.

HTH :)