Sorry things aren't working as expected. It is supposed to record continuously by default and doesn't delete until the disk is full. Can you post a snapshot of what you're seeing that leads you to believe that you're only getting 60 seconds?
It's certainly possible that something is not working as expected, but from what you said I can't tell what to check.
Is it that you're only seeing 60 seconds of time in the timeline? If so, did you try using the button that looks like a maginifying glass with a "-" inside it to zoom out the timeline?