> "You get about 16MB of persistent info that will stick with your instance" This is inaccurate. While bundling an image, you can specify its size (max 10GB),

> "You get about 16MB of persistent info that will stick with your instance" This is inaccurate. While bundling an image, you can specify its size (max 10GB), http://docs.amazonwebservices.com/AWSEC2/2008-02-01/DeveloperGuide/CLTRG-ami-bundle-vol.html http://docs.amazonwebservices.com/AWSEC2/2008-02-01/Develope.... The unused space is the free space in the root file system. It's a very bad idea to keep only 16MB free - it does fill up pretty quickly.