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 the system maintenance S6 switch is set to the On position, the system will erase all system configuration settings from both CMOS and NVRAM on the next reboot. Clearing CMOS, NVRAM, or both deletes configuration information. Be sure to configure the server properly to prevent data loss.