Computer system having at least two boot sequences

A computer system which can be powered on by at least a first and a second method, said first method being different from said second method, and being operative for allowing a user to select which one of at least two different pre-selected ordered list of initial program load (IPL) devices are to be used depending on whether the system was powered on by the first method or the second method, said computer system comprising:

• a processor coupled to a local bus and an input/output (IO) bus,
• a direct access storage device (DASD) being electrically coupled to the processor and being capable of storing a plurality of data records,
• a non-volatile memory coupled to said CPU and said IO bus, said non-volatile memory having basic input output system (BIOS) stored therein, said BIOS being effective for responding to the energization of the computer system by initiating a power on self test (POST),
• said non-volatile memory also storing a first pre-selected ordered list of IPL devices and a second pre-selected ordered list of IPL devices,
• wherein said POST is operative to determine whether said system was powered on by said first power on method or said second power on method and if said first power on method was used, said POST will attempt to IPL from said first pre-selected ordered list of IPL devices and if said second power on method was used, said POST will attempt to IPL from said second pre-selected ordered list of IPL devices.