39H MkDir: create a new directory 3cH create file 3aH RmDir: remove a directory 41H delete file 3bH ChDir: select default directory 0eH select current default disk 47H query current default directory 19H query current default disk 56H rename a directory 5700H query file time/date 5701H change file time/date 4eH or 42H query file size 42H change file size (pre-allocate) 4300H query file attribute 4301H change file attribute 56H change a file's name/move it 5cH lock/unlock file access Network and File-Sharing Functions 68H commit (flush buffers to disk) 0dH reset disk (flush buffers) IOCTL Functions (file/device info) 4eH 4fH search for files via ASCIIZ filename (get file info) 11H 12H search current directory via FCB (get DirEntryRec) ────────────────────────────────────────────────────────────────────────────── Service Groups Data Structures File Handles DOS Functions