How to create a .bat file to unmount a hard drive partition?

Question

cmd/bat

Guys, the topic in general is this: I recently made a response file for win7 here, it beats the disks itself, it does the user, etc.
The only thing I don't like is that it doesn't hide the hard drive "Reserved by the system"
I understand how to remove it manually, it's not too complicated,
but I would like to automate everything possible, so maybe someone knows how to do it using a batch file?

Answer 1

www.microsoft.com/resources/documentation/windows/...

Answer 2

There is a command line utility for this:
fsutil volume /?