I've built a couple of machines that need to run Ubuntu for a while. I will be away from them and will stow them at a friend's house.
In case something happens to the OS or one of the machines, what is the simplest way for a non-technical user to clone a backed-up image on a hard drive to another hard drive?
I know there's clonezilla. That is a multi-step manual process that involves special booting, etc. So the question is about having a non-technical user clone an image from one hard drive to another, to essentially replicate a hard drive that can be booted from.
I am specifically wondering if there are external devices that can have to hard drives inserted and clone the one to another with the click of a button. Rather, I know these devices exist, but I don't know if their cloning/copying process will be able to be booted from.