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For BIOS v2.3, the parameters on the Advanced tab that needed restoring were:

• Boot Feature:
  • Restore on AC Power Loss:      Stay Off
  • Power Button Function:            4 Seconds Override
• CPU Configuration:
  • SMT Control:                             Disabled
• PCIe/PCI/PnP Config.:
  • ... Slot 1 ... Bifurcation:             x8x8
    • (note: "page down"/Up-Arrow to see this)
• Supermicro ... Enet Ctrlr A:
  • DevCfgMenu:
    • Number of VFs per PF:     8
    • Energy Eff. Enet:               Disabled
    • DCB Protocol:                   Enabled (IEEE Only)
  • MBACfgMenu:
    • Legacy Boot Protocol:     PXE
    • Pre-boot Wake On LAN:  Enabled
• Supermicro ... Enet Ctrlr B:
  • DevCfgMenu:
    • Number of VFs per PF:     8
    • Energy Eff. Enet:               Disabled
    • DCB Protocol:                   Enabled (IEEE Only)
  • MBACfgMenu:
    • Legacy Boot Protocol:    PXE
    • Pre-boot Wake On LAN: Enabled

In addition, the Boot boot options on the Boot tab need to be modified.  Easiest may be to first First go into 'UEFI NETWORK Drive BBS Priorities' (probably need to scroll to the bottom) and move :

• Move the IB option to be last

Next, .  Then go back to the Boot boot options and change rearrange the options to:

1. UEFI USB Key
2. UEFI Hard Disk: RedHat Boot Manager
3. UEFI Network:(B198/D0/F0): UEFI PXE IPv4 Supermicro (First Ethernet Controller)
4. UEFI AP:UEFI: Built-in EFI Shell
5. Set remaining options to

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1. Disabled

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Save the changes by going to the Save & Exit tab and selecting 'Save Changes and Reset', which also reboots the machine.