Dell E75S001 Reference Manual page 23

3. On the System Security screen, ensure that Password Status is set to Unlocked.
4. In the System Password field, alter or delete the existing system password, and then press Enter or Tab.
5. In the Setup Password field, alter or delete the existing setup password, and then press Enter or Tab.
If you change the system and setup password, a message prompts you to reenter the new password. If you delete the
system and setup password, a message prompts you to confirm the deletion.
6. Press Esc to return to the System BIOS screen. Press Esc again, and a message prompts you to save the changes.
7. Select Setup Password, change, or delete the existing setup password and press Enter or Tab.
NOTE: If you change the system password or setup password, a message prompts you to reenter the new password. If
you delete the system password or setup password, a message prompts you to confirm the deletion.
Operating with setup password enabled
If Setup Password is set to Enabled, type the correct setup password before modifying the system setup options.
If you do not type the correct password in three attempts, the system displays the following message:
Invalid Password! Number of unsuccessful password attempts: <x> System Halted! Must
power down.
Even after you power off and restart the system, the error message is displayed until the correct password is typed. The
following options are exceptions:
● If System Password is not set to Enabled and is not locked through the Password Status option, you can assign a
system password. For more information, see the System Security Settings screen section.
● You cannot disable or change an existing system password.
NOTE: You can use the password status option with the setup password option to protect the system password from
unauthorized changes.
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
Redundant OS Location
Redundant OS State
Redundant OS Boot
Description
Enables you to select a backup disk from the following devices:
● None
● IDSDM
● SATA Ports in AHCI mode
● BOSS PCIe Cards (Internal M.2 Drives)
● Internal USB
NOTE: RAID configurations and NVMe cards are not included, as BIOS does not
have the ability to distinguish between individual drives in those configurations.
● Internal SD card
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 disables the device in hardware, so it is not 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.
Pre-operating system management applications 23