Hi I have a 600GB HD that is currently configured to a Windows system. So it won't allow me to "modify" it on my mac - if I try to use it I can only use the files that have been put on through another Windows computer and can't put any more on or delete what's there. I have looked at all the help sites but I simply don't understand any of the vocab they're using!! I just want to be able to "modify" it on my Mac (ie. put/use/delete/transfer files ) - I don't know what partitions and journals are so please help!! Can anyone please tell me how to change it so I can use put files, transfer and delete them on my HD at ease on just my mac. I don't need it for Windows. Thanks!!