when I boot the ubuntu 10.04 EBS image from alestic on EC2 I get two drives. /dev/sda1 seems like the root device and it's on 15GB. I find it in my volume folder in the AWS.
I also get an 150GB partition called /dev/sda2, but I don't really understand what this is. Also, it doesn't seem to persist between stops of the instance.
So, my question is, what is this /dev/sda2 partition and how should I relate to it?
Also, is there some good documentation explaining and describing persistent instances on EC2? I find it really confusing to understand volum, aim, snapshot, ebs, s3 and so on. Thanks!