Beyonwiz FV-L1 - Manual (Page 106)

Advanced Setup
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3) Check HDD
If the FV-L1 is turned off incorrectly, it is strongly recommended that
you check the internal HDD. If you select this menu item with the OK
button, a confirmation pop-up dialog will be displayed, as shown below.
Select “Yes” and press the OK button to proceed. To cancel the HDD
check function, select “No” and press the OK button, or press the EXIT
button.
NOTE
 When you turn the FV-L1 on after it is turned off incorrectly, a
warning message asks you to check the onboard HDD.

The HDD check process takes several minutes. During this process,
the PVR functions are disabled and you can only view a TV service or
listen to a radio service.