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System BIOS Intel® Server Board SE7520JR2
Revision 1.0
C78844-002
106
4.7.1 Operating Model
The following table summarizes the operation of security features supported by the BIOS.
Some security features require the Intel Management Module (IMM) to be installed. These
include “Diskette Write Protect”, “Video Blanking”, and “Power Switch inhibit.”
Table 43: Security Features Operating Model
Mode Entry
Method/
Event
Entry Criteria Behavior Exit Criteria After Exit
Secure boot Power
On/Reset
User Password
and Secure Boot
Enabled
Prompts for password if
booting from drive A.
Enters secure mode just
before scanning option
ROMs as indicated by
flashing LEDs on the
keyboard. Disables the
NMI switch on the front
panel if enabled in Setup.
Accepts no input from
PS/2 mouse or PS/2
keyboard; however, the
Mouse driver is allowed
to load before a
password is required. If
booting from drive A and
the user enters correct
password, the system
boots normally.
If the IMM module is
installed and the options
are enabled in Setup, the
system also blanks on-
board video, disables
floppy writes, and
disables the power and
reset switches on the
front panel.
User
Password
Admin
Password
Floppy writes are re-
enabled. Front panel
switches are re-enabled.
PS/2 Keyboard and PS/2
mouse inputs are
accepted. System
attempts to boot from drive
A. If the user enters
correct password, and
drive A is bootable, the
system boots normally
Password
on boot
Power
On/Reset
User Password
set and
password on
boot enabled
and Secure Boot
Disabled in
setup
System halts for user
Password before
scanning option ROMs.
The system is not in
secure mode. No mouse
or keyboard input is
accepted except the
password.
User
Password
Admin
Password
Front Panel switches are
re-enabled. PS/2
Keyboard and PS/2 mouse
inputs are accepted. The
system boots normally.
Boot sequence is
determined by setup
options.
Fixed disk
boot sector
Power
On/Reset
Set feature to
Write Protect in
Setup
Will write protect the
master boot record of the
IDE hard drives only if the
system boots from a
floppy. The BIOS will
also write protect the boot
sector of the drive C: if it
is an IDE drive.
Set feature
to Normal in
Setup
Hard drive will behave
normally.