IBM x3850 X6 Planning And Implementation Manual page 212

VMware ESXi supports booting from the Unified Extensible Firmware Interface (UEFI). To
ensure that you can boot ESXi successfully, you must change the boot order. The first boot
entry must Embedded Hypervisor. Follow these steps:
1. Press F1 for the UEFI Setup.
2. Select Boot Manager  Add Boot Option.
3. Select Generic Boot Option as shown in Figure 6-16.
Figure 6-16 Boot options
4. Select Embedded Hypervisor, as shown in Figure 6-17. If either option is not listed, the
option is already in the boot list. When you have finished, press Esc to go one panel back.
Figure 6-17 Add boot options
5. Select Change Boot Order.
6. Change the boot order to Embedded Hypervisor, as shown in Figure 6-18.
Figure 6-18
7. Select Commit Changes and press Enter to save the changes.
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IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide