My iPhoto library is being stored on an external hard drive; this is how I want it to be (please don't ask me how I did that; I can't remember. My question is this: if I delete a photo from the iPhoto library (from one of my albums, for example), am I to assume the photo is also deleted from my internal hard drive? Similarly, if I delete a photo from the Pictures folder on my internal hard drive, am I to assume it is deleted from the iPhoto library that this photo was linked with/to? I suppose I just want to know all of the possible options for storing photos from iPhoto, and what the relationship is between those stored in Pictures, and those stored on an external hard drive. I'm also not sure I understand the relationship between the actual iPhoto application, and the location where the photos are stored on both an internal, as well as external hard drive. It is my understanding that iphoto library is just an App, so whilst it looks like the photos are sitting in the App, they really aren't; rather they are located on one or both of my drives....correct? I'm a newbie to Apple so please speak slowly...thanks!