Address mapping for disk drive to accommodate multiple operating systems

摘要

In a first aspect and in a computer system that runs more than one operating system, a scheme for mapping memory locations in a data storage device is provided. A range of logical memory addresses at a low end of a logical memory address space is duplicated, and each duplicate range is assigned to a respective operating system, and mapped to a respective range of the storage device's physical memory address space, thereby reserving respective portions of the physical memory address space for writing of each operating system's configuration data.