A method and system for intercepting file system writes. The method includes monitoring a battery voltage with respect to a threshold voltage. The source is connected to the semiconductor layer. A light source extends from the projecting portion to illuminate the surrounding environment. The Quality Control indicates the Admission Control about the convenience of starting to block users that request guaranteed QoS, such as streaming service users, or non Real Time users to avoid the degradation in the provision of QoS for those users already admitted to the system. The first gate tab covers and extends along a boundary between the active region and the device isolation layer.