PPC12-427/BIOS Functionality
v1.0
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Page 34
5. Press
Enter
.
The PPC12-427 executes the built-in UEFI shell, and displays a list of
attached storage devices. The USB flash drive shows up in the list;
depending on other boot devices attached, it may be listed as
fs0
,
fs1
,
etc.
6. From the UEFI shell command prompt, enter the following command
where
N
is the number of the fs device representing the USB flash
drive:
fsN:
Example:
fs1:
The shell prompt changes to indicate that device fsN is now the active
storage device, e.g.,
fs1:
7. Execute the following command:
ls
The output of the
ls
command is similar to the display listing available
with the Linux or MS-DOS list directory command. If the correct
storage device was selected in step 6 above, the
ls
command should
show the BIOS update program in the directory listing obtained with
the ls command.
8. Assuming the BIOS update program is named
Update.efi
, enter the
following command at the shell command prompt:
Update.efi
The BIOS update program begins executing.
9. When the update program completes, power cycle the platform to
force the new BIOS image to load and execute.
10. Verify that the BIOS update was successful by comparing the displayed
BIOS version with the version specified in the BIOS update notification.
8.3
Embedded Controller (EC) Update with UEFI Shell
8.3.1 Scope
The Unified Extensible Firmware Interface (EFI or UEFI for short) is a new
model for the interface between operating systems and firmware. It
provides a standard environment for booting an operating system and
running pre-boot applications.
An optional feature of a UEFI implementation is the ability to boot the
system to a built-in shell. The UEFI shell provides a command prompt and
a rich set of commands that extend and enhance the capability of the UEFI
BIOS.
