DISKSZ10

DISKSIZE summarizes hard disk size, usage, and space available. It is
particularly useful for multiple drives, since it uses only one screen line
per drive, and includes a simple bar graph indication of the fraction of the
available space that has been used. It is offered as "freeware" with
no charge or warranty.

Useage:

DISKSIZE disklist

Prints a line of information regarding each disk drive in disklist.
Information includes disk volume label, size, space used and space available.
Disklist is a list of drive letters. Colons and spaces in the disk list
are optional. For example,

DISKSIZE cde

shows disk usage on drives C: D: and E:. I suggest creating a batch file
called HD.BAT (for Hard Disks) containing DISKSIZE followed by the letters
of your drives.