Reference Guide
Table Of Contents
- Dell EMC PowerEdge C6420 BIOS and UEFI Reference Guide
- Contents
- Pre-operating system management applications
- Options to manage the pre-operating system applications
- System Setup
- Viewing System Setup
- System Setup details
- System BIOS
- Viewing System BIOS
- System BIOS Settings details
- System Information
- Viewing System Information
- System Information details
- Memory Settings
- Viewing Memory Settings
- Memory Settings details
- Processor Settings
- Viewing Processor Settings
- Processor Settings details
- SATA Settings
- Viewing SATA Settings
- SATA Settings details
- NVMe Settings
- Viewing NVMe Settings
- NVMe Settings details
- Boot Settings
- Viewing Boot Settings
- Boot Settings details
- Choosing system boot mode
- Changing boot order
- Network Settings
- Viewing Network Settings
- Network Settings screen details
- Integrated Devices
- Viewing Integrated Devices
- Integrated Devices details
- Serial Communication
- Viewing Serial Communication
- Serial Communication details
- System Profile Settings
- Viewing System Profile Settings
- System Profile Settings details
- System Security
- Viewing System Security
- System Security Settings details
- Creating a system and setup password
- Using your system password to secure the system
- Deleting or changing system and setup password
- Operating with setup password enabled
- Redundant OS Control
- Viewing Redundant OS Control
- Redundant OS Control screen details
- Miscellaneous Settings
- Viewing Miscellaneous Settings
- Miscellaneous Settings details
- iDRAC Settings utility
- Device Settings
- Dell Lifecycle Controller
- Boot Manager
- PXE boot
Redundant OS Control
In the Redundant OS Control screen you can set the redundant OS information. This enables you to set up a physical recovery
disk on the system.
Viewing Redundant OS Control
To view the Redundant OS Control screen, perform the following steps:
Steps
1. Power 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
Description
Redundant OS
Location
Enables you to select a backup disk from the following devices:
● None
● SATA Ports
NOTE: RAID configurations and NVMe cards not are included as BIOS does not have the ability to
distinguish between individual drives in those configurations.
Redundant OS
State
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.
Redundant OS
Boot
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.
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