You may reformat it in MacOS to HFS+ format by following the instructions at Can I reformat LaCie Fuel to a MacOS Extended (HFS+) file system?
LaCie does not recommend formatting the LaCie Fuel in FAT32. If you prefer to use a PC compatible file system LaCie recommends exFAT. Instructions on formatting the drive in exFAT can be found at Format the LaCie Fuel exFAT on Windows 8.
LaCie does not recommend formatting the LaCie Fuel in FAT32. If you prefer to use a PC compatible file system LaCie recommends exFAT. Instructions on formatting the drive in exFAT can be found at Format the LaCie Fuel exFAT on Windows 8.