Dell PowerEdge R840 EMC Installation and Service Manual - Page 40
Redundant OS Control, Redundant OS Control screen details, BOSS PCIe cards Internal M.2 Drives
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Redundant OS Control You can use the Redundant OS Control screen to set the redundant OS info for redundant OS control. It enables you to set up a physical recovery disk on your system. Viewing Redundant OS Control To view the Redundant OS Control 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 Setup 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 System BIOS. 4. On the System BIOS screen, click Redundant OS Control. Redundant OS Control screen details The Redundant OS Control screen details are explained as follows: About this task Option Redundant OS Location Redundant OS State Redundant OS Boot Description Enables you to select a backup disk from the following devices: • None • Internal SD card • SATA Ports in AHCI mode • BOSS PCIe cards (Internal M.2 Drives) • Internal USB NOTE: RAID configurations and NVMe cards not are included as BIOS does not have the ability to distinguish between individual drives in those configurations. NOTE: This option is disabled if Redundant OS Location is set to None. When set to Visible, the backup disk is visible to the boot list and OS. When set to Hidden, the backup disk is disabled and is not visible to the boot list and OS. This option is set to Visible by default. NOTE: BIOS will disable the device in hardware, so it cannot be accessed by the OS. NOTE: This option is disabled if Redundant OS Location is set to None or if Redundant OS State is set to Hidden. When set to Enabled, BIOS boots to the device specified in Redundant OS Location. When set to Disabled, BIOS preserves the current boot list settings. This option is set to Disabled by default. 40 Pre-operating system management applications