INT 21 - Novell NetWare - LOCK PHYSICAL RECORD SET (OLD) AX = F21Bh CX = length of request packet in bytes DX = 0000h (no reply packet) DS:SI -> request packet (see #02480 at AX=F26Eh) ES:DI ignored Return: AX = status (see #02860 at INT 2F/AX=7A20h/BX=0000h) SeeAlso: AH=F2h"Novell",AX=F26Eh,AH=C2h"NetWare"