Post the output of the mem command, please.

https://drive.google.com/open?id=1OB6FnCj1VtW … xIOKNBr5ZIMXVAx

Here is the picture of the "mem /c" command. I can clearly see that I have too little free memory. That command is only shows some programs that use very little of the RAM. It wound be handy to know what is eating whole 2 megs of it by just booting to dos.

Have you enabled the EMM386 to run in the config.sys file?

DEVICE=C:\DOS\EMM386.EXE RAM D=64

If it already is, add a bit more RAM in the system and see what happens. I'll test that theory on my Toshiba Satellite Pro 410CDT by removing the 32MB expansion RAM.

It seems you're not using a memory manager that provides UMBs.

You need to add the following lines to your config.sys:

DOS=HIGH,UMB
DEVICE=<path to>EMM386.EXE RAM AUTO

After this, you should use DEVICEHIGH instead of DEVICE in config.sys and LOADHIGH in autoexec.bat to load your drivers/TSRs into upper memory blocks.

I knew I forgot to mention something. I was close, but no cigar.

matti46 wrote:

It wound be handy to know what is eating whole 2 megs of it by just booting to dos.

Smartdrive does. Remove it from autoexec.bat.

Forgot to point that out as well. I removed it from every system and the systems are using less RAM than before in DOS.

Thanks guys! I removed the smartdrive from autoexec and now memory usage seems normal. I installed win 3.1 while ago. It probably did the change. I recall installation mentioning something about it. Now Duke3D runs smoothly again.

Goody gumdrops.