Beyonwiz DP-H1 - Manual (Page 106)

Advanced Setup
96
2-2. HDD
1) Register USB Storage
To use the PVR function, an optional USB storage is required; the USB
storage should be registered. If you select “Register USB HDD” menu
with the OK button, the USB devices connected to the DP-H1 will be
listed. To register the selected USB storage, please press the OK button.
The “R” mark indicates that the selected USB storage is registered.
NOTE
z When you register a USB storage, all the data stored in the USB
storage will be erased.
z
The registered USB storage does not compatible to the Windows
operating system. Therefore, you can not use the USB storage for a
PC unless you reformat it with your PC.