Bios Recovery Via Serial Port; Serial Port And Console Redirection; Bios Security Features - Congatec COM Express conga-B915 User Manual

10.2.2

BIOS Recovery via Serial Port

The Serial Flash method allows for boot block recovery by loading a BIOS image via a serial port (COM1). This is can be used by many
headless embedded systems which rely on a serial port as a debug and utility console port. This feature is disabled by default. See setup node
in the "BIOS Setup Description" section 9.4.11 "Remote Access Configuration Submenu".
For more information about "BIOS Recovery via Serial Port" refer to application note AN6_BIOS_Recovery.pdf, which can be found on the
congatec AG website at www.congatec.com.
Note
The above mentioned feature is only applicable if an external Super I/O has been implemented on the carrier board.
10.3

Serial Port and Console Redirection

Serial Redirection allows video and keyboard redirection via a standard RS-232 serial port. For more information about "Serial Port and Console
Redirection" refer to application note AN2_Remote_Control.pdf, which can be found on the congatec AG website at www.congatec.com.
Note
The above mentioned feature is only applicable if an external Super I/O has been implemented on the carrier board.
10.4

BIOS Security Features

The BIOS provides both a supervisor and user password. If you use both passwords, the supervisor password must be set first. The system
can be configured so that all users must enter a password every time the system boots or when setup is executed.
The two passwords activate two different levels of security. If you select password support you are prompted for a one to six character password.
Type the password on the keyboard. The password does not appear on the screen when typed.
The supervisor password (supervisor mode) gives unrestricted access to view and change all the setup options. The user password (user
mode) gives restricted access to view and change setup options.
If only the supervisor password is set, pressing <Enter> at the password prompt of the BIOS setup program allows the user restricted access
to setup.
Setting the password check to 'Always' restricts who can boot the system. The password prompt will be displayed before the system attempts
to load the operating system. If only the supervisor password is set, pressing <Enter> at the prompt allows the user to boot the system.
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