Int 21 Fn F20A - Novell Netware - Lock Logical Record Set (old) [N]
AX = F20Ah
CX = length of request packet in bytes
DX = 0000h (no reply packet)
DS:SI -> request packet (see #2167 at AX=F26Ch)
ES:DI ignored
Return: AX = status (see #2546 at INT 2F/AX=7A20h/BX=0000h)
See Also: AH=F2h"Novell",AX=F204h,AX=F26Ch,AH=D1h"NetWare"