Справочник Пользователя для Intel SE7520JR2

Revision 1.0 

The BIOS has a ROM image size of 2 MB. A standard 1.44MB floppy diskette cannot hold the 
entire ROM file due to the large file size. To compensate for this, a Multi-disk recovery method 
is available for BIOS recovery. 

The BIOS contains a primary and secondary partition, and can support rolling BIOS updates. 
The recovery process performs an update on the secondary partition in the same fashion that 
the normal flash update process updates the secondary partition.  After recovery is complete 
and the power is cycled to the system, the BIOS partitions switch and the code executing POST 
will be the code that was just flashed from the recovery media.  The BIOS is made up of a boot 
block recovery section, a main BIOS section, an OEM logo/user binary section, and an NVRAM 
section.  The NVRAM section will either be preserved or destroyed based on a hot key press 
during invocation of the recovery.  All the other sections of the secondary BIOS will be updated 
during the recovery process.  If an OEM wishes to preserve the OEM section across an update, 
it is recommended that the OEM modify the provided AMIBOOT.ROM file with the user binary or 

OEM logo tools before performing the recovery. 

A BIOS recovery can be accomplished from one of the following devices: a standard 1.44 or 
2.88 MB floppy drive, an USB Disk-On-Key, an ATAPI CD-ROM/DVD, an ATAPI ZIP drive, or a 
LS-120/LS-240 removable drive. 

The recovery media must include the BIOS image file, 

AMIBOOT.ROM

. 

The recovery mode procedure is as follows: 

1.  Insert or plug-in the recovery media with the 

AMIBOOT.ROM

 file. 

2.  Power on the system. When progress code E9 is displayed on port 80h, the system will 

detect the recovery media (if there is no image file present, the system will cycle through 
progress code F1 to EF). 

3.  When F3 is displayed on port 80h, the system will read the BIOS image file. 

Note: Three different hot-keys can be invoked:  

• 

<Ctrl+Home> - Recovery with CMOS destroyed and NVRAM preserved. 

• 

<Ctrl+PageDown> - Recovery with both CMOS and NVRAM preserved. 

• 

<Ctrl+PageUp> - Recovery with both CMOS and NVRAM destroyed. 

 

Setting the Clear CMOS jumper (board location J1H2 jumper Row ‘C’) produces a “reset system 
configuration” request.  When a request is detected, the BIOS loads the default system 
configuration values during the next POST. 

In systems configured with an Intel Management Module, the CMOS can be cleared without 
opening the chassis.  Using the control panel, the user can hold the reset button for 4 seconds 
and then press the power button while still pressing the reset button.  In addition, IMM give the 
capability of having software issue a “reset system configuration” request.  Software can send a 
specific OEM command to the Sahalee BMC to indicate the request.