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Appendix C: UEFI BIOS Recovery

C-1

Appendix C

UEFI BIOS Recovery Instructions

Warning! 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

arising 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, hand-off control to

a computer system at bootup.

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

BIOS Block)

An AMIBIOS ash chip consists of a boot sector block and a main BIOS code block

(a main BIOS image). The boot sector block contains critical BIOS codes, including

memory detection and recovery codes for the user to ash a new BIOS image if the

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

codes execute rst. Once it 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 block crashes. However, when the BIOS Boot sec-

tor crashes, you will need to send the motherboard back to Supermicro

for RMA repair.

C-3 To Recover the Boot Sector Using a USB-Attached

Device

This feature allows the user to recover a BIOS image using a USB-attached device

without additional utilities used. A USB ash device such as a USB Flash Drive, or

a USB CD/DVD ROM/RW device can be used for this purpose. However, a USB

Hard Disk drive cannot be used for BIOS recovery at this time.

Supero X10SLV User Manual

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