Chapter 7. IBM System x3690 X5 323
Figure 7-19 Legacy Option ROM states
When booting from SAN with multiple paths for redundancy, you need to enable the legacy
option ROM for both HBAs.
The default UEFI mode
On the x3690 X5, you can sequence the order in which the UEFI will search the various
attached devices to locate a boot device. You can shorten the time that it takes to perform the
search by moving the adapter that contains the boot device to the top of the list.
In UEFI mode, PXE boot can be disabled for the onboard network interface card (NIC) ports
through F1-Setup by selecting System Settings ï‚® Network ï‚® PXE Configuration and then
by selecting the port from which you want to disable PXE boot. Figure 7-20 on page 324
shows the panel that you use to disable PXE boot on one of the two onboard network ports.
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