Dell EMC PowerEdge R840 BIOS and UEFI Reference Guide
Summary
This reference guide documents BIOS and UEFI firmware for the Dell EMC PowerEdge R840 server. Covers pre-OS management applications including System Setup, iDRAC settings, device settings, and Lifecycle Controller. Details BIOS configuration options, boot management, security settings, memory and processor configuration. Designed for system administrators configuring and troubleshooting PowerEdge R840 servers.
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Dell EMC Power Edge R840 BIOS and UEFI Reference Guide
Part Number: E49S Series Regulatory Type: E49S001 June 2021 Rev. A01
Page Summary Contents For Dell EMC PowerEdge R840 BIOS and UEFI Reference Guide
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Dell EMC Power Edge R840 BIOS and UEFI Reference Guide Part Number: E49S Series Regulatory Type: E49S001 June 2021 Rev. A01
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Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of d...
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Contents Chapter 1: Pre-operating system management applications...........................................................4 Options to manage the pre-operating system applications.......................
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Pre-operating system management applications You can manage basic settings and features of a system without booting to the operating system by using the system firmware. Topics: Options to manage the ...
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System Setup details The System Setup Main Menu screen details are explained as follows: Option Description System BIOS Enables you to configure BIOS settings. i DRAC Settings Enables you to configure...
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Option Description NVMe Settings Specifies options to change the NVMe settings. If the system contains the NVMe drives that you want to configure in a RAID array, you must set both this field and the ...
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Option Description System BIOS Specifies the BIOS version installed on the system. Version System Specifies the current version of the Management Engine firmware. Management Engine Version System Serv...
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Option Description System Memory Specifies the system memory voltage. Voltage Video Memory Specifies the amount of video memory. System Memory Specifies whether the system memory tests are run during ...
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The Persistent Memory screen details are explained as follows: Option Description Persistent Enables or disables persistency for NVDIMM-N. If this option is set to Off, persistency for all NVDIMM-N Me...
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Remaining Rated Specifies the lifetime percentage of the NVDIMM. Write Endurance Lock State Specifies the security state of the NVDIMM such as unknown, disabled, unknown, locked, frozen, max password,...
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Processor Settings details About this task The Processor Settings screen details are explained as follows: Option Description Logical Processor Enables or disables the logical processors and displays ...
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Option Description processor cores to transition into a lower power idle state. This option can only be enabled if the operating system supports it. It is set to Disabled by default. NOTE: This featur...
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View SATA Settings To view the SATA Settings screen, perform the following steps: Steps 1. Turn on, or restart your system. 2. Press F2 immediately after you see the following message: F2 = System Set...
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View NVMe settings To view the NVMe Settings screen, perform the following steps: Steps 1. Turn on, or restart your system. 2. Press F2 immediately after you see the following message: F2 = System Set...
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Boot Settings details About this task The Boot Settings screen details are explained as follows: Option Description Boot Mode Allows you to configure the Boot Sequence and Enable or Disable the indivi...
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4. On the System BIOS screen, click Network Settings. Network Settings screen details The Network Settings screen details are explained as follows: About this task Option Description UEFI PXE Enables ...
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NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then restart your system and try again. 3. On the System Setup Main Menu screen, click Sys...
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Option Description Memory Mapped Enables or disables the support for the PCIe devices that need large amounts of memory. Enable this I/O above 4 GB option only for 64-bit operating systems. This optio...
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Table 3. Slot Bifurcation (continued) Option Description Slot 2 Bifurcation x4 Bifurcation or x8 Bifurcation Slot 3 Bifurcation x16 Bifurcation, or x8 Bifurcation, or x4 Bifurcation, or x4, x4, x8 Bif...
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Option Description Enables the COM port or Console Redirection options. This option is set to Off by default. Serial Port Enables you to set the port address for serial devices. This field sets the se...
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Option Description System Profile Sets the system profile. If you set the System Profile option to a mode other than Custom, the BIOS automatically sets the rest of the options. You can only change th...
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Intel Persistent Controls the tuning function for Quality of Service (Qo S) knobs. Disabled by default. Recipe 1 is Memory CR Qo S recommended for 2-2-2 memory configurations in App-Direct. Recipe 2 i...
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Option Description Table 4. TPM 1.2 security information TPM information Description TPM Information Changes the operational state of the TPM. This option is set to Type: 1.2-NTC by default. TPM Firmw...
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Option Description Power Button Enables or disables the power button on the front of the system. This option is set to Enabled by default. AC Power Sets how the system behaves after AC power is restor...
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Secure Boot Configures the Secure Boot Custom Policy. To enable this option, set the Secure Boot Policy to Custom Custom Policy option. Settings Redundant OS Control You can use the Redundant OS Contr...
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Miscellaneous Settings You can use the Miscellaneous Settings screen to perform specific functions such as updating the asset tag and changing the system date and time. View Miscellaneous Settings To ...
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For more information about using i DRAC, see Dell Integrated Dell Remote Access Controller User's Guide at www.dell.com/ idracmanuals. Device Settings Device Settings enables you to configure the devi...
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Menu item Description Launch Lifecycle Exits the Boot Manager and invokes the Dell Lifecycle Controller program. Controller System Utilities Enables you to launch System Utilities menu such as System ...
Manual Details
| Brand | Dell |
|---|---|
| Pages | 28 |
| File Size | 203.10 KB |
| Published | June 26, 2026 |
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Frequently Asked Questions
How do I access the main system setup menu to configure settings?
Perform steps 1 and 2 by turning on or restarting your system, then pressing F2 immediately after seeing the prompt.
What utility functions are available within the System Utilities section?
System Utilities contains options such as Launch Diagnostics, BIOS Update, File Explorer, and Reboot System.