Method Of Uefi Firmware And Computer System Thereof

The present invention relates to a computer processing and executing method of a unified extensible firmware interface (UEFI) firmware, wherein the UEFI firmware supports to initialize one of a plurality starting loader programs, the UEFI firmware is located in a memory, and the memory is operationally coupled with a processor UEFI firmware. The method comprises the steps of executing the UEFI firmware; detecting the types of an instruction set in the processor; according to the mode selection, determining a starting selection mode; obtaining a common configuration data from a plurality of configuration data; obtaining the unique configuration data corresponding to the starting selection mode from the plurality of configuration data of the UEFI firmware of the memory; generating a starting loader address corresponding to the starting selection mode; and according to the common configuration data and the unique configuration data, executing a starting loader program located at the starting loader address in th