Ok, so I've been trying for the past day to copy my itunes library to my seagate freeagent portable 500gb HD. Every time I try to copy, it'll go for about an hour or so, then give me a -36 error stating that a file is unreadable. The drive then ejects and becomes corrupt. I have to plug it into windows and reformat it, and have repeated this 3 times. Is this issue because of my mac, or is it my drive? All the itunes files that are supposedly unreadable have worked fine when played through itunes. Thanks!