Uefi bios, Uefi shell introduction, basic operation, Entering the uefi shell – Kontron KBox C-101 User Manual
Page 53: Exiting the uefi shell
15. uEFI BIOS
KBox C-101 – User’s Guide (Version 2.00)
15.
uEFI BIOS
The integrated COMExpress
®
module (COMe-bHL6) integrated in the KBox C-101 is equipped with Phoenix SecureCore,
which is located in an onboard SPI serial flash memory. The uEFI (Unified Extensible Firmware Interface)/BIOS is set at
the factory, corresponding to the system’s standard hardware configuration and for normal operating conditions.
Therefore there is no need to set or change the BIOS environment to operate your system.
A detailed BIOS description can be found in the manual of the installed COMExpress
®
module. You can
download the corresponding manual fr
by selecting the product
name.
The Kontron uEFI BIOS features a built-in and enhanced version of the uEFI Shell. For a detailed description of the
available standard shell scripting refer to the EFI Shell User’s Guide. For a detailed description of the available standard
shell commands, refer to the EFI Shell Command Manual. Both documents can be downloaded from the EFI and
Framework Open Source Community homepage (
Please note that not all shell commands described in the EFI Shell Command Manual are provided by the
Kontron uEFI BIOS.
15.1. uEFI Shell Introduction, Basic Operation
The uEFI Shell forms an entry into the uEFI boot order and is the first boot option by default.
15.1.1. Entering the uEFI Shell
To enter the uEFI Shell, follow the steps below:
1. Power on the board.
2. Ignore the message: “Press the <F2> key”.
3. Press the ESC key within 5 seconds after a message such as the one below appears:
EFI Shell version 2.31 [4660.22136]
Current running mode 1.1.2
Device mapping table
blk0
:Removable HardDisk - Alias hd33b0b0b fs0
Acpi(PNP0A03,0)/Pci(1D|7)/Usb(1, 0)/Usb(1, 0)/HD(Part1,Sig17731773)
...
Press the <ESC> key within 5 seconds to skip startup.nsh, and any other key to
continue.
The output produced by the device mapping table can vary depending on the board’s configuration.
If the <ESC> key is pressed before the 5-second timeout has elapsed, the shell prompt is shown:
Shell>
15.1.2. Exiting the uEFI Shell
To exit the uEFI Shell, follow one of the steps below:
1. Invoke the exit uEFI Shell command to select the boot device in the boot menu for the OS to boot from.
2. Reset the board using the reset uEFI Shell command.
www.kontron.com
51