Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

  ◄Summary► ◄Details► ◄Example►                                   ◄Back►
 
  Argument
 
    drive      Integer expression in the range 0..26, representing the
               drive to be checked
 
  Return
 
    LongInt    Bytes of free space (DiskFree) or total capacity
               (DiskSize) on the specified drive, or -1 if the drive
               is not recognized
 
  Description
 
    The DiskFree function returns the number of bytes available for use
    on a specified drive. The DiskSize function returns the total
    capacity of a specified drive. The total capacity is the sum of the
    number of bytes used and the number of bytes free.
 
    The drive can be a floppy drive, a hard disk, or a RAM drive.
    Specify the drive to be checked by passing a byte value. To
    indicate the current drive, pass a drive value of 0. To indicate a
    specific drive letter, pass the numeric equivalent: drive A=1,
    B=2,...,Z=26.
 
    To be able to specify the drive with a letter, use the Ord and
    UpCase functions to convert the character to a byte:
 
       result := DiskFree( Ord( UpCase( ch ) ) - 64 );
 
    DiskFree and DiskSize return -1 if the drive is not recognized.