So my brothers external hard drive isnt working... please help in our windows xp pc it doesnt show up in my computer. shows up in disk managment but if you right click all the options are unclickable. plus I wasnt able to asign a letter to it. it says it is empty now too. so he lost everything. well no biggie we just want to be able to use it again! I plugged it into my mac and it showed up and I dragged something in and it seemed to work fine but now the pc says its empty. anyway I really have no idea what to do. been searching the forums and all but the disk gives me no options when I right click on it (where it shows up above and down below). so I dont know what to do!