Before you use an alternate installation device, certain requirements must be met.
You must enable the device. You need to record and keep the logical address of the system bus and system card at which the alternate installation device is attached. If you have the device set up on different bus and you do not have this information available, you will not be able to complete installations or recoveries.
If you change the configuration of your system, you need to ensure that this information is correct before you start to use the alternate installation device.