Int 2F Fn FE04 U - Norton Utilities 5.0+ Diskmon, Filesave / Ep - Intern [U] AX = FE04h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI or 2020h) AX = status 0008h successful??? See Also: AX=FE00h