System and method of assigning device numbers to I/O nodes of a computer system

摘要

A system and method of assigning device numbers to a plurality of I/O nodes of a computer system. Each of the plurality of input/output nodes is initialized to a common default device number. The method includes assigning a unique device number such as a Unit ID, for example, to each one of the input/output nodes. The method may also include determining whether any one of the input/output nodes includes a graphics port. The method may further include reassigning the default device number to a particular one of the input/output nodes in response to determining that the particular one of the input/output nodes a graphics port.