Samsung UN55ES8000G E-Manual page 654

the PVR (Personal Video Recorder)
function and a device that supports the
HDMI-CEC feature, recording by the
PVR function takes precedence.
●
If the USB device has failed the
Performance
go through the
Device Performance Test
you record with the
●
The Timeshift
used with a USB storage device that
Test, the USB device must
Device Format
Guide
functions can only be
Device
and
again before
or Channel.