{{page>en:templates:dosint}}

====== Int 21H, AH=16H ======

===== Version =====

1 and higher

===== Brief =====

CREATE OR TRUNCATE FILE USING FCB

===== Family API =====

[[en:docs:fapi:DosRead]]

===== Input =====

        AH = 16h
        DS:DX -> unopened FCB (see #01345), wildcards not allowed

===== Return =====

 AL = status
            00h successful
            FFh directory full or file exists and is read-only or locked
===== Notes =====

Notes:  if file already exists, it is truncated to zero length
        if an extended FCB is used, the file is given the attribute in the
          FCB; this is how to create a volume label in the disk's root dir
        not supported by MS Windows 3.0 DOSX.EXE DOS extender
        (FAT32 drive) this function will only succeed for creating a volume
          label; FAT32 does not support FCBs for file I/O
        
===== See also =====

AH=0Fh,AH=10h,AH=3Ch

===== Note =====

Text based on [[http://www.cs.cmu.edu/~ralf/files.html|Ralf Brown Interrupt List Release 61]]

{{page>en:templates:int}}

{{page>en:templates:fapi}}