Im planning on buying a portable harddrive (1TB) - (http://www.pcworld.co.uk/gbuk/data-storage/hard-drives/portable-external-hard-drives/wd-my-passport-portable-hard-drive-1tb-black-14553716-pdt.html) and want to know if when i format it to a mac and copy all my music and movies - will my PC be able to read the data. the PC wont be adding to the harddrive, just reading from it. Is this possible?