🚀 go-pugleaf

>>1. How can I want always start windows in 386 enhanced mode ?

win /3

However, the story is not that simple, a lot has to do with your system
config.
	a 80x86 family CPU where x >= 3
	4+ Mb of RAM with approx. 2.5 - 3 available.
and maybe other minor  things, but can't think of any off hand..

>>2. How can I make windows to make most use of the 4 MB ram ?
>>   I am currently using the following config.sys
>>
>>	DEVICE=C:\DOS\HIMEM.SYS
>>        DOS=HIGH,UMB
>>        DEVICE=C:\DOS\EMM386.SYS 1024 RAM
>>        . . .

Recommend the first few lines of config.sys (with DOS 5.0):

DEVICE=HIMEM.SYS
DEVICE=EMM386.EXE RAM   <-- subject to other applications
DOS=HIGH,UMB
DEVICEHIGH=		<-- whatever device
   :
   :
BUFFERS=2		<-- reduce buffers size for SMARTDRV.EXE

And in autoexec.bat put

SMARTDRV

do not LOADHI it, since it loads it self high.

The above are few of the most basic things you can do with 4Mb of RAM
and DOS 5.0.