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Sub-Screen
Boot Override
13.3. The uEFI Shell
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 (http://sourceforge.net/projects/efi-shell/files/documents/).
Please note that not all shell commands described in the EFI Shell Command Manual are provided by the Kontron uEFI
BIOS.
13.3.1. Introduction, Basic Operation
The uEFI Shell forms an entry into the uEFI boot order and is the first boot option by default.
13.3.1.1. Entering the uEFI Shell
To enter the uEFI Shell, follow the steps below:
1.
Power on the board.
2.
Press the ESC key within 5 seconds after a message such as the one below appears:
UEFI Interactive Shell v2.0
EDK II
UEFI v2.40 (American Megatrends, 0x0005000A)
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>
13.3.1.2. 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
Function
Description
UEFI: Built-in EFI
This group of functions includes a list of tokens, each of
Shell
them corresponding to one device within the boot order.
Select a drive to immediately boot that device regardless
of the current boot order. If booting to EFI Shell this way,
an exit from the shell returns to Setup.
CP3005-SA – Rev. 0.6 Preliminary
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