INT 2F - DOS 4 only SHARE internal - TURN ON FILE SHARING CHECKS AX = 1080h Return: AL = status F0h successful FFh checking was already on Note: DOS 4.x SHARE has dual functions: FCB support for large (>32M) media and file sharing checks. The undocumented commandline flag /NC can be used to disable the sharing code. SeeAlso: AX=1000h,AX=1081h