| 摘要 |
A controller interface ownership changing system and method are applicable to a basic input/output system (BIOS) of a data processing device having an operating system. The method actuates a first controller interface ownership changing mechanism to actuate system management interrupt (SMI) of a first controller interface controller when the BIOS is executing a power-on self test (POST), judges if SMI of a second controller interface is actuated through the SMI of the first controller interface after the POST is finished and when the operating system (OS) is installing, checks an ownership changing mechanism of the OS or a driver program of the second controller interface is actuated when actuated, disables the first controller interface and the SMI of the first controller interface in accordance with judging and checking results, and enables the driver program of the first controller of the OS to control the first controller, so as to change the ownerships of the controller interfaces between the BIOS and the OS.
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