Embodiments of this application provides an operating system data update method, a device, a storage medium, and a computer program product. The method is applied to an electronic device. After starting, the electronic device loads data from a basic partition, a first static partition, and a dynamic partition to run a first operating system. After the first operating system runs, the method includes: obtaining a patch package based on the version number of the first operating system; updating data in the second static partition based on the patch package, after confirming the data of the first static partition is consistent with the data of the second static partition; modifying a startup sequence of the electronic device from starting from the first static partition to starting from the second static partition; restarting the electronic device.