Hello everyone! I need some help with my new external hard drive I just got out the box! I bought the Seagate Drive and it's come with no instructions at all, just plug it in and go! However, I can see the drive, but when I try put anything in it it says "The item cannot be moved because "Expansion Drive" cannot be modified" So I panicked! Other people online have said how they use one with their Mac. Some people have mentioned about having to reformat something to make it work with Mac though? If anyone could tell me how to get it working with my Mac I would be so grateful!