[Defenderland]

Again: same parts does not mean identical hardware. Be careful.
Identical chips do not necessarily mean, that e.g. the chips are mapped to the same hardware adress space or that the timing specifications for the chipsets are identical. Drivers may not work at all or even could destroy the hardware.
And you also should be aware, that embedded systems are not modular systems like PCs, where at boot, everything is controlled by the BIOS, which is not touched, by experimenting with the OS. The booting of an embedded system is not that simple and it can even lose it's boot-capability.