The 744 has a fuse in the #4 hyd system. In the event of a JAL-type incident they would have one elevator, one set of spoilers and whatever else comes from the #4 system. Enough to fly.
There is a kit available to retro-fit the Classics with a fuse, but the cost is high enough that most operators declined to fit it. Criminal, that.
The Classic has an electrical pitch control that only a handful of pilots and flight engineers know about, and few practice with it in the sim, but it does work and I recommend you try it. Never know if you will need it. If the JAL crew had known about it maybe they would not have lost the airplane. Maybe. But most pilots who try it in the sim seem to get back on the ground, maybe not on a runway though. Could be used to put the airplane into a large open area or a lake, and with practice a safe landing on a long runway is feasible. If you understand the Classic system, you can get a similar effect on the 744, using the Standby Flap control, but once again you need to think about it before the emergency happens and practice it in the sim first.