My NTFS formatted hard drive does not work with the Apple TV.
The Apple TV does not currently support NTFS formatted drives. The drive will need to be formatted in a Mac OS or FAT32 format to be used on the Apple TV.
Format external drive in FAT32
1. Download the free 'FAT32FORMAT' tool from Ridgecrop Consultants here
2. Run the program, and select your drive to format.
(NOTE: THIS WILL ERASE ANY DATA CURRENTLY ON THE DRIVE!)