Developed the PartitionGuard API for the OpenDevicePartnership/embedded-services repository, focusing on safer and more resilient partition management in embedded systems. The work introduced a new PartitionGuard type that supports both asynchronous locking and non-blocking access to partition storage, leveraging Rust’s async programming capabilities. Hardened arithmetic was implemented to prevent integer overflows across partition offsets and sizes, addressing critical reliability concerns. The update included comprehensive unit tests for guard-based operations, boundary conditions, and lock contention scenarios. By enabling non-blocking access during panic paths, the solution reduced deadlock risks and established a robust foundation for scalable, concurrent partition operations in Rust.