System maintenance switch
Position
Default
Function
S1
Off
Off = iLO security is enabled.
On = iLO security is disabled.
S2
Off
Off = System configuration can be
changed.
On = System configuration is locked.
S3
Off
Reserved
S4
Off
Reserved
S5
Off
Off = Power-on password is enabled.
On = Power-on password is disabled.
S6
Off
Off = No function
On = ROM reads system configuration as
invalid.
S7
Off
Off = Set default boot mode to UEFI.
On = Set default boot mode to legacy.
S8
—
Reserved
S9
—
Reserved
S10
—
Reserved
S11
—
Reserved
S12
—
Reserved
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.
CAUTION:
Clearing CMOS, NVRAM or both deletes configuration information. Be sure to configure the server
properly to prevent data loss.
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
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System maintenance switch
