Set your meal preference. I usually choose “Asian Vegetarian”. That guarantees you a (somewhat) tasty curry and you’ll also be served first.
If you’re travelling to somewhere with a significant timezone change, prepare beforehand. Start shifting your body clock about 1 hour per day. Most importantly, shift when you eat your meals - that seems to be the key for me.
Unless you are flying business class or higher, there’s no real way to get a good sleep on a plane. All the gadgets in the world won’t help. Get a thick sleep mask and some earplugs and hope for the best.
Once the seatbelt sign is off, take your shoes off. You’ll feel a lot more comfortable. Put them on if you go to the toilet though!
The drive itself will work with any processor. If all you have is data on there, it will work.
Or do you mean you want to swap the drive which has the operating system on it?