V návodu (specifikaci) nic nepíšou?
Google našel třeba tohle:
1- Disk must have 40 GB at least.
2- The TV set formats the disk (all data is lost) and creates two partitions; a small one (ext2 FS) and a big one (JFS). Recordings are set in the big one. 3- Any recording made in a LG TV is DRM protected, so forget about to play them outside the TV where the recordings were made.