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                             DiskSize function

  DECLARATION:  DiskSize(Drive : Word);

      PURPOSE:  Returns the total size in bytes of a disk

         UNIT:  DOS

  RESULT TYPE:  LongInt

      REMARKS:  A Drive of 0 indicates the default drive; 1 indicates
                Drive A; 2 indicates Drive B; etc.

                NOTE:  DiskSize returns -1 if the drive number is invalid
See Also: DiskFree GetDir
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