Long story short - I am running an old intel black macbook in which the battery is toast so the machine is constantly plugged in. I was doing a system update in order to access the new app store. Part way through the update the power went out in my home consequently killing the laptop. I was not able to boot from the HD so I installed the original 10.5 restore discs and got it up and running. I have a folder called "previous systems" in which all my apps and docs and stuff are found. I have drug all I need to save from that folder to my "new" docs and what not. Question: Can I now safely delete the "previous systems" folder. It takes up at 60 gigs and I want the space. Thanks. Also, any advice would be helpful.