Hello everyone. I have a 500 go MS-DOS (FAT32) External Hard Drive. I have been using it to save all my data from my previous windows computer. I have 200go free and would like to partition this hard drive to use Time Machine. My questions are the following: How can I partition this hard drive without having to erase everything? Can I keep the current data that's on it and partition the 200go to use Time Machine?If yes, how? What is the most ideal format to format for MAC OSX, Fat 32 , right? Thank you very much for your help. Regards.