Hey guys. From my previous topic about my Macbook, I was very impressed with the response time of replies and I thank and appreciate the fast active responses! I have a question, or rather a problem again. As I have the mid-2014 model Macbook Air; I only have a 128GB SSD, and it is non-upgradable to Macbooks. So I've been told to use an external hard disk. So I have done this, but now I have errors with some applications complaining that they don't have root ownership and what not. How would I go about being able to install packages/applications to my external drive? Some apps have the ability to change the destination drive, but others do not. How would I change it manually? Thank you so much!