How to Factory Reset?

I’ve a MiniBook 8” with Windows + Ubuntu in dual boot.
How can I factory reset the mini pc?
I have seen there is an hidden partition called “Recovery”.

Hi! I don`t 'think that chuwi shipps these devices with a default dual boot configuration. The recovery partition will most probably be the windows recovery partition. You can use the windows restore option, but that will most probably delete any ubuntu partition you have, or at least the bootrecord for ubuntu.