Component identification 12
S5
Off = Power-on password is enabled.
On = Power-on password is disabled.
S6
On = ROM reads system
configuration as invalid.
S7
Off = Set default boot mode to UEFI.
On = Set default boot mode to legacy.
To access the redundant ROM, set S1, S5, and S6 to on.
When system maintenance switch S6 is set to the On position, the system is prepared to erase all system
configuration settings from both CMOS and NVRAM.
IMPORTANT:
Before using the S7 switch to change to Legacy BIOS Boot Mode, be sure the
HPE Dynamic Smart Array B140i Controller is disabled. Do not use the B140i controller when
the server is in Legacy BIOS Boot Mode.
NMI functionality
An NMI crash dump creates a crash dump log before resetting a system which is not responding.
Crash dump log analysis is an essential part of diagnosing reliability problems, such as failures of
operating systems, device drivers, and applications. Many crashes freeze a system, and the only
available action for administrators is to restart the system. Resetting the system erases any information
which could support problem analysis, but the NMI feature preserves that information by performing a
memory dump before a system reset.
To force the system to invoke the NMI handler and generate a crash dump log, do one of the following:
• Use the iLO Virtual NMI feature.
• Short the NMI header ("System board components" on page 10).
For more information, see the Hewlett Packard Enterprise website (http://www.hpe.com/support/NMI).
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