MPCBL0050N02Q Intel, MPCBL0050N02Q Datasheet - Page 142

• Manufacturer Part Number: MPCBL0050N02Q
• Manufacturer: Intel

Specifications of MPCBL0050N02Q

• Lead Free Status / RoHS Status: Supplier Unconfirmed

6.5
6.6
6.7
6.8
Intel NetStructure
Technical Product Specification
142
®
Recovering EFI BIOS Data
Some types of failure can destroy the EFI BIOS. For example, the data can be lost if a
power outage occurs while the EFI BIOS is being updated in flash memory. The EFI
BIOS can be recovered from the backup EFI BIOS. Recovery mode activates when EFI
BIOS checksum fails and EFI BIOS notifies the IPMC to failover. If EFI BIOS hangs
before code calculating CRC32 is executed, expiration of FRB timer initiate booting from
backup FWH1.
It is also possible to manually force EFI BIOS loading from redundant FWH1 by
changing DIP switch. Refer to
Complementary Metal-Oxide Semiconductor (CMOS) RAM
CMOS RAM is nonvolatile storage that stores data needed by the EFI BIOS. The data
consists of certain onboard configurable settings. The settings in the EFI BIOS Setup
menu are often called CMOS settings.
Note: The CMOS settings are not affected by the full discharge of the hold up capacitor
as all settings are saved to non-volatile memory on the board. Only date and time
values will be reset if the capacitor fully discharges.
Improving Booting Time
Loading option ROMs for bootable devices is one of the most time consuming
procedures during EFI BIOS boot up. By default option ROMs for SAS storage devices
and for PXE network boot will be loaded. In order to improve boot time of the system,
disable Option - ROM(s) of the devices you do not need to boot. The SAS option ROM
can be disabled in “EFI BIOS setup->Advanced->Mass Storage Controller”, while PXE
option ROM can be disabled in “EFI BIOS setup->Advanced->PCI Configuration”. Please
refer to
EFI BIOS Security Features
The EFI BIOS uses passwords to prevent unauthorized tampering with the board setup.
Both user and administrator passwords are supported by the EFI BIOS. An
Administrator password must be entered in order to set the user password. The
maximum length of the password is seven characters. The password cannot have
characters other than alphanumeric (a-z, A-Z, 0-9). It is not case sensitive.
Once set, a password can be cleared by changing it to a null string. Entering the user
password will allow the user to modify the time, date, and user password. Other setup
fields can be modified only if the administrator password is entered. If only one
password is set, this password is required to enter EFI BIOS Setup.
The administrator has control over all fields in EFI BIOS Setup, including the ability to
clear the user password.
If the user or administrator enters an incorrect password three times in a row during
the boot sequence, the system is placed into a halt state. A system reset is required to
exit out of the halt state. This feature makes it difficult to break the password by
guessing at it.
MPCBL0050 Single Board Computer
Section 7.0
for details on EFI BIOS setup options.
Section
3.4.
MPCBL0050—EFI BIOS Features
Order Number: 318146-001
September 2007