I don't own the camera you are asking about.
If you leave the memory card out of the camera and the camera does not give
you an error message then you are recording to the internal memory.
I suggest that you slow go over the options for your camera but accessing
the cameras menu and make some notes of the settings that are important to
you.
You could try looking for this camera in google and might learn more about
it and its operation by reviews on the internet.
There might also be a forum for JVC cameras that could be found by
searching in
google.com
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Regards Brian