Old email attachments and old system files also add to poor performance. Then you have system junk and junk leftover by commonly used apps that might take up a lot of space without you even knowing it. Items left in the trash bin but not fully deleted can also take up a lot of space. High quantities of large and old files such as photos and music can take up a lot of room on your hard drive and over time lead to slow performance. It’s pretty obvious when a nice computer like a MacBook Pro starts to slow down, so if you think it’s acting slow, there’s a good chance it is. programs and apps are taking a long time to load, web pages crash or don’t load, or your screen freezes often, it’s a good sign that your hard drive might need to be cleaned. If your MacBook Pro is running slower than usual, i.e. If you are not sure that your MacBook Pro needs a clean up, here are a few symptoms that often mean your hard drive is a mess and is due for an easy tune-up.Ī cluttered hard drive is pretty normal, especially if you’ve had your computer for a while so don’t worry if any of this is happening to your machine. How to Clean Up A MacBook Pro Hard Drive the Hard Way.How to Clean Up a MacBook Pro Hard Drive the Easy Way.