CHDIR--Notes

Changing to the root directory

The root directory is the top of the directory hierarchy for a drive. To    
return to the root directory, type the following command:

    cd \

Using the current directory from a different drive

If you are working in the \PUBLIC\JONES directory on drive C and you change
to drive D, you can copy files to and from the \PUBLIC\JONES directory by
specifying only the drive letter C.

Changing the directory on another drive

You can change the current directory on another drive by specifying the
drive letter on the command line when you use CHDIR or CD.