Справочник Пользователя для Intel SE7520JR2

Revision 1.0 

The BIOS relies on specialized hardware and additional flash space to accomplish online 
update/rolling of the BIOS.  To this end, the flash is divided into two partitions, primary and 
secondary.  The active partition from which the system boots shall be referred to as the primary 
partition. The AMI FLASH update suite and Intel Online updates preserve the existing BIOS 
image on the primary partition.  BIOS updates are diverted to the secondary partition. After the 
update is complete, a notification flag is set.  During the subsequent boot following the BIOS 
update, the system continues to attempt to boot from the primary BIOS partition. On determining 
that a BIOS update occurred in the previous boot, the system then attempts to boot from the 
new BIOS.  If a failure happens while booting to the new BIOS, the specialized hardware on the 
system switches back to the primary BIOS partition, thus affecting a “Roll Back”. 

Server platforms support a DOS-based firmware update utility.  This utility loads a fresh copy of 
the BIOS into the flash ROM. 

The BIOS update may affect the following items: 

•  The system BIOS, including the recovery code, setup utility and strings. 
•  Onboard video BIOS, SCSI BIOS, and other option ROMS for the devices embedded on 

the server board. 

•  OEM binary area. 
• Microcode 

updates. 

 

An afuXXX AMI Firmware Update utility (such as 

afudos

, 

AFUWIN

, 

afulnx,

 or 

AFUEFI

) is 

required for a BIOS update. 

The baseboard includes an area in flash for implementation-specific OEM add-ons.  This OEM 
binary area can be updated as part of the system BIOS update or it can be updated 
independent of the system BIOS. 

Three conditions can cause the system to enter recovery mode: 

•  Pressing a hot key 

•  Setting the recovery jumper (J1H2, labeled RCVR BOOT) to pins 2-3 

•  Damaging the ROM image, which will cause the system to enter recovery and update 

the system ROM without the boot block.