Generally, if I switch the bootable disks of two laptops, will both of them be able to boot into each other's OS? If not, what is the reason that it is not possible? Differences between CPU ISAs, differences between operating systems, or something else?
If I have two laptops running both Lubuntu 18.04, will it be possible then?
What if one laptop has a 64-bit Intel CPU, and the other has a 64-bit AMD CPU?