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

This is the best answer about 'root device' so far! AWS is still new. And most of the times, the answer is just 'cut and paste' straight from AWS document, which does not help much!

https://web.archive.org/web/20140601070714/https://skeddly.desk.com/customer/portal/articles/1346918-ebs-backed-versus-instance-store