A small amount of space on each hard disc drive is reserved for use by the file system. The size of this can be shown by running the DOS command CHKDSK. For FAT drives, CHKDSK shows it as "... bytes in ... directories". For NTFS drives, CHKDSK shows it as "... kilobytes in ... indexes", "... kilobytes in use by the system." and "... kilobytes occupied by the logfile." I would like to know which Win32 API function I can use to get the same information.