Abstract: An audio application program is isolated from an Internet application program in a cell phone system having a processor. An operating system program, a partition manager process and the audio and Internet application programs are stored in a computer readable memory of the cell phone. The method includes executing the partition manager process, the audio application program and the Internet application program by the cell phone system processor. Executing the partition manager process includes the partition manager process controlling the audio application program executing to be associated with a first executing instance of the cell phone operating system and the Internet application program executing to be associated with a second executing instance of the cell phone operating system, so that the audio application program is isolated from the Internet application program.

Abstract: A non-mechanical persistent storage is provided for a mechanical storage device. The operating system instructs the mechanical storage device to cache ranges of data stored in the mechanical storage device in the non-mechanical persistent storage. The mechanical storage device then transfers the data to the non-mechanical persistent storage. When the operating system makes a write to a range that is tracked in the non-mechanical persistent storage, the data is written to the mechanical storage and mirrored to the non-mechanical persistent storage. When the operating system makes a read to a range that is tracked in the non-mechanical persistent storage, such as when the system is in startup, the data is read from the non-mechanical persistent cache.