I have a late 2009 Mac Mini that has been very slow the last few months. I was told I need to upgrade the RAM and also needed to clear space on my startup disc. I only have 5GB left. 1. Can I upgrade the RAM to 8GB? I was told unofficially that it will support 8GB, but offically only 4GB. I don't want to encounter any problems with it if it cannot handle that much. 2. How do I clear my startup disc? I know I have lots of pictures, music, and some videos. I have deleted a lot of music from iTunes, but I still have a lot of pictures. 3. Would it be best to save all my pictures to an external hard drive then delete them from the computer or could I save my pictures to a USB drive and the external hard drive just for security? I am afraid that if I delete them from my computer that it will delete them from the external hard drive the next time I save data. I've never used an external hard drive so I'm not sure this is a valid concern.