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Table 10-1
Troubleshooting information for nonvolatile memory usage (continued)
Description
LOM EEPROM
Trusted Platform Module (TPM)
1
Under typical operation, the only user data stored on the primary storage device are preferences for
device configuration and settings for connections. However, the administrator can configure the system
to allow users to store data locally.
2
The only user data potentially stored in BIOS Settings are the ownership and asset tags, administrator
password, and startup password.
3
The Trusted Platform Module may contain encrypted passwords or certificates generated from user or
administrator input.
Questions and answers
Use this section to answer your questions about nonvolatile memory.
1.
How can the BIOS settings be restored (returned to factory settings)?
IMPORTANT:
drive. See question and answer 6 for steps to securely erase information.
The restore defaults feature does not reset the Custom Secure Boot keys. See question and
answer 7 for information about resetting the keys.
a.
Turn on or restart the computer, and then quickly press esc.
b.
Select Main, and then select Apply Factory Defaults and Exit.
c.
Follow the on-screen instructions.
d.
Select Main, select Save Changes and Exit, and then follow the on-screen instructions.
2.
What is a UEFI BIOS, and how is it different from a legacy BIOS?
The Unified Extensible Firmware Interface (UEFI) BIOS is an industry-standard software interface
between the platform firmware and an operating system (OS). It replaces the older BIOS
architecture but supports much of the legacy BIOS functionality.
Like the legacy BIOS, the UEFI BIOS provides an interface to display the system information and
configuration settings and to change the configuration of your computer before an OS is loaded.
BIOS provides a secure runtime environment that supports a Graphic User Interface (GUI). In this
environment, you can use either a pointing device (touch screen, touchpad, pointing stick, or USB
mouse) or the keyboard to navigate and make menu and configuration selections. The UEFI BIOS
also contains basic system diagnostics.
90
Chapter 10 Statement of memory volatility
Volatility description
Non-volatile, 2 MB embedded in
LAN controller
Non-volatile; 51 KB ROM for
firmware and 38 KB system
parametric data
The restore defaults feature does not securely erase any information on your hard
Storage user data
How to erase
No
N/A
Follow instructions below
3
No
under "Clearing TPM"
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