Hi, After reformating my macbook, my macbook won't recognize my external hard drive. When I plug in the f/w the icon doesn't pop up on my desktop(like it usually does). I checked the power source, the external hd is on, and I checked my f/w and usb ports (they both work with other external hd and flash). I still need the data on my external hd, is there anything that I can do so my mac recognizes the hd? Thanks!!!