System root drive

[jorsak]

I've created a batch file that allows me to do a silent install of a number of diagnostics utilities in win 2K and Win xp.

I'm trying to re-write it for win 9x.

The problem I'm having is that I don't know the root drive on all these machines. They could change.

In win 2K/XP I use the command %systemdrive% to determine this.

That doesn't work in win 9x and I've seen the command %windir% (if memory serves) but I've had no luck with it either.

Can someone tell me how to determine the main system drive in Win9x?

[oftentired]

%WINBOOTDIR%