Supero C7B250-CB-ML, Руководство пользователя

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Appendix C: BIOS Recovery
C-1
Appendix C
BIOS Recovery Instructions
Attention! Do not upgrade the BIOS unless your system has a
BIOS-related issue. Flashing the wrong BIOS can cause irreparable
damage to the system. In no event shall Supermicro be liable for
direct, indirect, special, incidental, or consequential damages aris-
ing from a BIOS update. If you need to update the BIOS, do not
shut down or reset the system while the BIOS is updating to avoid
possible boot failure.
C-1 An Overview to the BIOS
The Unified Extensible Firmware Interface (UEFI) specification provides a
software-based interface between the operating system and the platform
firmware in the pre-boot environment. The UEFI specification supports
an architecture-independent mechanism for add-on card initialization to
allow the UEFI OS loader, which is stored in the add-on card, to boot up
the system. UEFI offers a clean, hands-off control to a computer system
at boot up.
C-2 How to Recover the BIOS Image (-the Main BIOS
Block)
A BIOS flash chip consists of a recovery BIOS block, comprised of two
boot blocks and a main BIOS block (a main BIOS image). The boot block
contains critical BIOS codes, including memory detection and recovery
codes for the user to flash a new BIOS image if the original main BIOS
image is corrupted. When the system power is on, the boot block codes
execute first. Once that is completed, the main BIOS code will continue
with system initialization and bootup.
Note: Follow the BIOS Recovery instructions below for BIOS
recovery when the main BIOS boot crashes. However, when
the BIOS boot block crashes, you will need to follow the pro -
cedures in Appendix D.