Supermicro SuperServer 5019D-FN8TP User Manual page 127

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E.1 Introduction

This motherboard supports the Dual Boot Block feature, which is the last-ditch mechanism to

recover the BIOS boot block. This section provides an introduction to the feature.

BIOS Boot Block

A BIOS boot block is the minimum BIOS loader required to enable necessary hardware

components for the BIOS crisis recovery flash that will update the main BIOS block. An on-

call BIOS boot-block corruption may occur due to a software tool issue (see image below) or

an unexpected power outage during BIOS updates.

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Reading flash . . . . . . . . . . . . . . . . . . . . . . done

-- ME Data Size checking . ok

-- FFS checksums . . . . . . . . ok

Erasing Boot Block . . . . . . . . . . . done

__Updating Boot Block . . . . . . . . 0x00A91000 (13%)

BIOS Boot Block Corruption Occurrence

When a BIOS boot block is corrupted due to an unexpected power outage or a software tool

malfunctioning during BIOS updates, you can still reboot the system by closing pins 2 and 3

using a cap on jumper JBR1. When JBR1 is set to pins 2 and 3, the system will boot from a

backup boot block pre-loaded in the BIOS by the manufacturer.

Appendix E

Dual Boot Block

AMI Firmware Update Utility vX.XX.XX

127

Appendix E: Dual Boot Block

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