The CHDIR command changes the current directory of the specified or default
disk drive.  This command may also be invoked using the abbreviated version CD.
The command format is as follows:

      CHDIR [[d:]path]        or         CD [[d:]path]

If the command is entered without parameters or with only the drive specifier
"d:", the current directory path of the default or specified drive is displayed
without being modified.

DOS looks in the current directory to find commands and files whose names are
entered without specifying which directory they are in.  A more extensive
directory search can be set up for finding commands by using the PATH command
in conjunction with this command (see the help file PATH for details).  A
current directory may be set for each disk drive on the system regardless of
which drive is the default at the time the command is entered.  However,
changing the default directory of another disk can get a bit confusing.  If
another diskette is put in the drive the old default directory is still used,
so if you get a "file not found" or "no such path" error message that does not
make sense, check the drive's default directory.

The following page gives you some examples of the flexibility provided by the
CHDIR command.
CHDIR \LEVEL1  - Change the directory path to "root --> LEVEL1" on the current
                 disk drive.  The leading backslash tells DOS to start at the
                 root directory.

CHDIR A:\LEVEL1  - Change the directory path to "root --> LEVEL1" on diskette
                   drive A:.

CHDIR B:\LEVEL1\LEVEL2
                -  Change the directory path to "root --> LEVEL1 --> LEVEL2"
                   on diskette drive B:.

CHDIR B:LEVEL3  - Change the directory on diskette drive B: to the current
                  directory path plus LEVEL3.  If the command above was entered
                  prior to this command the new path on drive B: would be
                  "root --> LEVEL1 --> LEVEL2 --> LEVEL3".  The absence of the
                  leading backslash tells DOS to start at the current directory.
NOTE **  If the commands above were entered and the current disk drive was A:,          all the files from A:\LEVEL1 could be copied to B:\LEVEL1\LEVEL2\LEVEL3
        by entering the command COPY *.* B: because the current directory is
        remembered for each disk drive (see the help file COPY for details).
k, and the drive the computer
  was originally booted from must also contain a system disk (if the batch file
 