Int 21/AX=6F00h

AX = 6F00h DS:SI -> DWORD buffer for maximum size of an extended attribute

Return:
CF clear if successful AX = 0000h buffer filled CF set on error AX = error code

Note: Also supported by OS/2 v2.0+ Virtual DOS Machines

See Also: AX=5703h - AX=6C01h - AH=6Eh"OS/2"