What means to be a root device on EC2?

Question

I couldn\'t find the answer on EC2 documentation. What is it for? If I launched an EBS backed instance, the root device for the instance would be an EBS volume. If I install

Answer 1

I agree with what Ian wrote. I would add that the "root device" in EC2 is analogous to the operating system partition in a personal computer. It is where the filesystem of your OS resides.