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Server Platform Utilities
Extensible Firmware Interface (EFI) Shell
The EFI Shell is an EFI application that allows other EFI applications to be launched, EFI device
drivers to be loaded, and operating systems to be booted. The combination of the EFI firmware and
the EFI Shell provides an environment that can be modified and adapted to many hardware
configurations.
The EFI shell provides a set of basic commands used to manage files and EFI NVRAM shell and
boot variables. A list of these basic commands is shown in Table 10. Extensive information is
available on the EFI website at http://developer.intel.com/technology/efi.
For detailed information about the EFI Shell, its commands, and the ability to develop within the
environment, see the EFI Developer's Guide at the EFI website. Other items that may be a great
deal of help include the sample implementation and the EFI Application Toolkit. To obtain the
sample implementation, click the "Tools" hyperlink at the left side of the EFI website screen. Click
"Sample Implementation" to download the files to your hard drive.
In addition to the standard shell commands available in the EFI Shell, the EFI environment allows
you to create your own shell commands and EFI applications. To develop your own shell
commands, download the EFI Application Toolkit from the "Tools" hyperlink on the EFI website.
Table 10.
EFI Shell Commands
Command
<drive_name>:
alias [-bdv] [sname] [value]
attrib [-b] [+/- rhs] [file]
bcfg -?
botmaint
break
cd [path]
cls [background color]
comp file1 file2
connect [-r] [-c] Handle#
½DeviceHandle# DriverHandle#
cp [-r] file [file] ... [dest]
date [mm/dd/yyyy]
dblk device [Lba] [Blocks]
devices [-b] [-1XXX]
devtree [-b] [-d]
dh [-b] [-p prot_id] | [handle]
disconnect DeviceHandle#
[DriverHandle# [ChildHandle#]
dmem {address] [size] [;MMIO]
dmpstore
drivers [-b] [-lXXX]
136
Description
Changes drives. For example, entering fs0: and pressing the
<Enter> key changes the drive to the LS-240 drive
Sets or gets alias settings
Views or sets file attributes
Configures boot driver and load options in EFI NVRAM
Launches Boot Maintenance Manager
Executes a breakpoint
Changes the current directory
Clears the screen
Compares two files
Binds the EFI driver to a device and starts the driver
Copies files and directories, [-r] = recursive
Gets or sets the date
Performs a hex dump of BlkIo Devices
Displays devices
Displays device tree
Dumps handle information
Disconnects device from driver
Displays the contents of memory
Dumps the variable store
Displays drivers
Intel® Server Platforms SR6850HW4 and SR6850HW4/M Product Guide
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Table of Contents
Troubleshooting
