China DOS Union

Then the only choice is to put DOS 6.22 on a floppy by itself. When you need to use it, boot the system with it separately, that is, physically isolate the two systems.

What exactly do you mean by "process" here?

Wengier, you're not asking me, are you?

It simply won't let it execute autoexec.bat!
The poster above, you're talking nonsense!

That can't be possible!!
You can only use a compromise method!!

Does Win2000 automatically skip some invalid command lines in autoexec.bat (for example c:\dos\emm386.exe ram, etc.)?

EMM386.EXE runs in CONFIG.SYS.
And Win2000 will intercept illegal instructions such as direct hard disk access, etc.

win2000 will also process config.sys, right? What am I supposed to do then?
device=c:\dos\emm386.exe ram This line definitely won't work for win2000, right?

Yes, Win2K does selectively execute certain commands in AUTOEXEC.BAT, such as PATH and so on. Roy's method should work.

It seems it won't work. I also tried doing this to skip some settings in autoexec.bat
but didn't succeed
Could it be because when autoexec.bat is running, the os variable doesn't exist yet


But you can use the chioce command

That's not the reason, I'll try it myself in a moment.

After testing, I found that Win2K only executes commands in files like AUTOEXEC.BAT that begin with commands such as SET and PATH, so the solution is actually very simple: just add an extra instruction at the very beginning of that line. For example, change:
PATH=C:\DOS
to:
IF 1==1 PATH=C:\DOS
and then Win2K will not execute that command.

The reason Roy's method does not work is that as soon as Win2K sees a command other than SET or PATH (such as IF), it simply ignores it completely, so it is ineffective.

Thanks, wengier, for willingly “testing it on yourself”; much appreciated!