Systems and methods for providing a storage extension system and method for secure and seamless access by various boot architectures are described. In some embodiments, an Information Handling System (IHS) may include a processor and a BIOS coupled to the processor, the BIOS having program instructions that, upon execution, cause the IHS to receive a request to access a bios storage region of the IHS from a driver, determine whether the device associated with the driver is a platform boot device such that when the boot device is a platform boot device, facilitate access to a native bios storage region of the bios storage region by the driver, and when the boot device is not a platform boot device, facilitate access to an extended bios storage region of the bios storage region by the driver.