Disk Utility and the inability to format HFS+ non-journalled
All I wanted to do with mine was to directly connect a USB hard drive. The drive formats supported by the WD TV are FAT32, NTFS, and HFS+ (non-journalled). FAT32 has a 4 gigabyte file size limit which makes it impractical for many HD movies, and NTFS is not natively supported by the Mac.