{{page>en:templates:dosint}}

====== Int 21H, AH=39H ======

===== Version =====

2 and higher

===== Brief =====

"MKDIR" - CREATE SUBDIRECTORY

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


===== Input =====

        AH = 39h
        DS:DX -> ASCIZ pathname

===== Return =====

 CF clear if successful
            AX destroyed
        CF set on error
            AX = error code (03h,05h) (see #01680 at AH=59h/BX=0000h)

===== Notes =====

all directories in the given path except the last must exist fails if the parent directory is the root and is full
        
DOS 2.x-3.3 allow the creation of a directory sufficiently deep that it is not possible to make that directory the current directory because the path would exceed 64 characters
          
under the FlashTek X-32 DOS extender, the pointer is in DS:EDX
          
===== See also =====

AH=[[en:docs:dos:api:int21:3a|3Ah]],AH=[[en:docs:dos:api:int21:3b|3Bh]],AH=[[en:docs:dos:api:int21:6d|6Dh]],AX=[[en:docs:dos:api:int21:71:39|7139h]],AX=[[en:docs:dos:api:int21:43:ff|43FFh]]/BP=5053h
 INT 2F/AX=1103h,INT 60/DI=0511h

===== 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}}