Make batch file always copy to root directory.

I need to know if there's a variable like %appdata% that signifies the root windows directory. For example currently my batch file copies everything into C:\ md C:\MCBackup\LIT\ Copy LIT\* C:\MCBackup\LIT\ I know that people running dual installations of windows might not be running this script on the C:\ drive. Over view: - Need to know if there's a variable that define the Root windows drive EX: C:\