3 the uefi shell, 1 introduction, basic operation, 1 entering the uefi shell – Kontron AM4024e User Manual
Page 69: 2 exiting the uefi shell, The uefi shell, Introduction, basic operation, Entering the uefi shell, Exiting the uefi shell
D R A F T — F O R I N
T E R N A L U S E O N L Y
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User Guide
AM4024(E)
9.3 The uEFI Shell
The Kontron uEFI BIOS features a built-in and enhanced version of the uEFI Shell. For a detailed de-
scription of the available standard shell scripting refer to the EFI Shell User’s Guide. For a detailed de-
scription 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.
9.3.1 Introduction, Basic Operation
The uEFI Shell forms an entry into the uEFI boot order and is the first boot option by default.
9.3.1.1 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 config-
uration.
If the ESC key is pressed before the 5-second timeout has elapsed, the shell prompt is shown:
Shell>
9.3.1.2 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.