A method for accessing Redfish data that is compliant with Redfish® specification, and that is stored in a board baseboard management controller (BMC) of a computer device is provided. The method includes: executing a unified extensible firmware interface (UEFI) application to transmit a data request to the BMC through a host interface using a representational state transfer (REST) protocol; when it is determined that Redfish data that corresponds with a URL included in the data request has been received, performing data transformation on the Redfish data to obtain transformed data; and generating and presenting the transformed data on a graphic interface.