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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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Include:   <dos.h>, <errno.h>
 
  Syntax:    unsigned _dos_getdiskfree( unsigned drive,
                                        struct diskfree_t *diskspace );
 
  Returns:   0 if successful, or the DOS error code if not.
             errno: EINVAL
 
  See also:  _dos_getdrive, _dos_setdrive
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