Supermicro X10SRA User Manual download pdf (Page 135)

Appendix C: UEFI BIOS Recovery

C-1

Appendix C

UEFI 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 UEFI BIOS

The Unied Extensible Firmware Interface (UEFI) specication provides a

software-based interface between the operating system and the platform

rmware in the pre-boot environment. The UEFI specication 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 bootup.

C-2 How to Recover the UEFI BIOS Image (-the Main

BIOS Block)

A UEFI BIOS ash 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 ash a new BIOS image if the original

main BIOS image is corrupted. When the system power is on, the boot

block codes execute rst. 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 procedures

in Appendix D.

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Supermicro X10SRA User Manual Page 135