Re: Oddly I've alway s thought it's the *processor* that should be upgradeable.
In a way the processor is upgradeable.
You remove the screen, keyboard and other modules from your existing computer and plug them into the new one.
Here at home, I still run a Sun monitor from the turn of the century and a PS/2 keyboard.
And, uh, then swap out the hard drive too and lose all your work. Unless you plan to boot an x86 kernel on ARM or vice versa.
And what, prey tell, stops U-Boot on a flash chip from loading the ARM kernel from a FAT partition residing on the same hard drive as the x86 OS? It works with SD cards: been there, done that.