Dell EMC PowerEdge MX750c BIOS and UEFI Reference Guide Part Number: E04B Regulatory Type: E04B003 May 2021 Rev.
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Contents Chapter 1: Pre-operating system management applications...........................................................4 System Setup....................................................................................................................................................................... 4 System BIOS................................................................................................................................................................... 5 iDRAC Settings utility......
1 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.
System BIOS To view the System BIOS screen, power on the system, press F2, and click System Setup Main Menu > System BIOS. Table 2. System BIOS details Option Description System Information Provides information about the system such as the system model name, BIOS version, and Service Tag. Memory Settings Specifies information and options related to the installed memory. Processor Settings Specifies information and options related to the processor such as speed and cache size.
Table 3. System Information details (continued) Option Description System CPLD Version Specifies the current version of the system complex programmable logic device (CPLD) firmware. UEFI Compliance Version Specifies the UEFI compliance level of the system firmware. Memory Settings To view the Memory Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Memory Settings. Table 4.
Persistent Memory details About this task The Persistent Memory screen details can be found in the DCPMM User Guide at https://www.dell.com/poweredgemanuals. Processor Settings To view the Processor Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Processor Settings. Table 5. Processor Settings details Option Description Logical Processor Each processor core supports up to two logical processors.
Table 5. Processor Settings details (continued) Option Description Sub NUMA Cluster Enables or disables the Sub NUMA Cluster. This option is set to Disabled by default. MADT Core Enumeration Specifies the MADT Core Enumeration. This option is set to default in Round Robin. UPI Prefetch Enables you to get the memory read started early on DDR bus. The Ultra Path Interconnect (UPI) Rx path will spawn the speculative memory read to Integrated Memory Controller (iMC) directly.
Table 5. Processor Settings details (continued) Option Description NOTE: For two processors 64 cores configuration, x2APIC mode is not switchable if 256 threads are enabled (BIOS settings: All CCD, cores and logical processors enabled). AVX ICCP Pre-Grant License Enables or disables AVX ICCP Pre-Grant License. This option is set to Disabled by default. AVX ICC Pre-Grant Level Enables you to select between the different AVX ICC transition levels offered by Intel.
Table 6. Processor n details Option Description Family-Model-Stepping Specifies the family, model, and stepping of the processor as defined by Intel. Brand Specifies the brand name. Level 2 Cache Specifies the total L2 cache. Level 3 Cache Specifies the total L3 cache. Number of Cores Specifies the number of cores per processor. Maximum Memory Capacity Specifies the maximum memory capacity per processor. Microcode Specifies the processor microcode version.
Table 9. NVMe Settings details Option Description NVMe mode Enables or disables the boot mode. The option is set to Non-RAID mode by default. BIOS NVMe driver Sets the drive type to boot the NVMe driver. The available options are Dell Qualified Drives and All Drives. This option is set to Dell Qualified Drives by default. Boot Settings You can use the Boot Settings screen to set the boot mode to either BIOS or UEFI. It also enables you to specify the boot order.
Table 10. Boot Settings details Option Description Table 11. UEFI Boot Settings (continued) Option Description Boot Options Enable/Disable Enables you to select the enabled or disabled boot devices Choosing system boot mode System Setup enables you to specify one of the following boot modes for installing your operating system: ● UEFI boot mode (the default), is an enhanced 64-bit boot interface. If you have configured your system to boot to UEFI mode, it replaces the system BIOS. 1.
Table 12. Network Settings details (continued) Option Description PXE Device n (n = 1 to 4) Enables or disables the device. When enabled, a UEFI PXE boot option is created for the device. PXE Device n Settings(n = 1 to 4) Enables you to control the configuration of the PXE device. UEFI HTTP Settings Enables you to control the configuration of the UEFI HTTP device. HTTP Device n (n = 1 to 4) Enables or disables the device. When enabled, a UEFI HTTP boot option is created for the device.
Table 16. Integrated Devices details Option Description User Accessible USB Ports Configures the user accessible USB ports.Selecting All Ports Off disables all front and back USB ports; selecting All Ports Off (Dynamic) disables all front and back USB ports during POST. This option is set to All Ports On by default. When user accessible USB ports is set to All Ports Off (Dynamic) the Enable Front Ports Only option is enabled.
Table 16. Integrated Devices details (continued) Option Description Internal SD Primary Card By default, the primary SD card is selected to be SD Card 1. If SD Card 1 is not present, then the controller selects SD Card 2 to be the primary SD card. OS Watchdog Timer If your system stops responding, this watchdog timer aids in the recovery of your operating system. When this option is set to Enabled, the operating system initializes the timer.
Table 17. Serial Communication details (continued) Option Description Failsafe Baud Rate Specifies the failsafe baud rate for console redirection. The BIOS attempts to determine the baud rate automatically. This failsafe baud rate is used only if the attempt fails, and the value must not be changed. This option is set to 115200 by default. Remote Terminal Type Sets the remote console terminal type. This option is set to VT100/VT220 by default.
Table 18. System Profile Settings details (continued) Option Description NOTE: This option can be disabled only if the C States option in the Custom mode is set to disabled. NOTE: When C States is set to Enabled in the Custom mode, changing the Monitor/ Mwait setting does not impact the system power or performance. CPU Interconnect Bus Link Power Management Enables or disables the CPU Interconnect Bus Link Power Management. This option is set to Enabled by default.
Table 20. TPM 1.2 security information (continued) Option Description TPM Status Specifies the TPM status. TPM Command Controls the Trusted Platform Module (TPM). When set to None, no command is sent to the TPM. When set to Activate, the TPM is enabled and activated. When set to Deactivate, the TPM is disabled and deactivated. When set to Clear, all the contents of the TPM are cleared. This option is set to None by default. Table 21. TPM 2.
Table 22. System Security details (continued) Option Description Software Guard Extensions Epoch n: Sets the Software Guard Extensions Epoch values. Enable writes to SGXLEPUBKEYHASH[3:0] from OS/SW Enables or disables the Enable writes to SGXLEPUBKEYHASH[3:0] from OS/SW. SGX LE Public Key Hash0: Sets the bytes from 0-7 for SGX Launch Enclave Public Key Hash. SGX LE Public Key Hash1: Sets the bytes from 8-15 for SGX Launch Enclave Public Key Hash.
Table 22. System Security details (continued) Option Description Table 23. Secure Boot Mode Options Descriptions User Mode In User Mode, PK must be installed, and BIOS performs signature verification on programmatic attempts to update policy objects. The BIOS allows unauthenticated programmatic transitions between modes. Audit mode In Audit Mode, PK is not present. BIOS does not authenticate programmatic update to the policy objects and transitions between modes.
Using your system password to secure your system About this task If you have assigned a setup password, the system accepts your setup password as an alternate system password. Steps 1. Turn on or reboot your system. 2. Type the system password and press Enter. Next steps When Password Status is set to Locked, type the system password and press Enter when prompted at reboot. NOTE: If an incorrect system password is typed, the system displays a message and prompts you to reenter your password.
Redundant OS Control To view the Redundant OS Control screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Redundant OS Control. Table 24. Redundant OS Control details Option Description Redundant OS Location Enables you to select a backup disk from the following devices: ● None ● IDSDM ● SATA Ports in AHCI mode ● BOSS PCIe Cards (Internal M.
iDRAC Settings utility The iDRAC settings utility is an interface to set up and configure the iDRAC parameters by using UEFI. You can enable or disable various iDRAC parameters by using the iDRAC settings utility. NOTE: Accessing some of the features on the iDRAC settings utility needs the iDRAC Enterprise License upgrade. For more information about using iDRAC, see Dell Integrated Dell Remote Access Controller User's Guide at https:// www.dell.com/idracmanuals.
To access the PXE boot option, boot the system and then press F12 during POST instead of using standard Boot Sequence from BIOS Setup. It does not pull any menu or allows managing of network devices.
2 Document history Table 27.
