EFI/UEFI Shell Command

EFI/UEFI Shell Command

Lists the commands supported by the EFI Shell interface on EFI/UEFI.
The EFI Shell is accessible from an nPartition console when the nPartition is in an active state but has not booted an operating system.
For details on these commands, enter help command at the EFI shell prompt.


The following categories of commands are available:
    “Boot Commands — EFI Shell”.
    “Configuration Commands — EFI Shell”.
    “Device, Driver, and Handle Commands — EFI Shell”.
    “Filesystem Commands — EFI Shell”.
    “Memory Commands — EFI Shell”.
    “Shell Navigation and Other Commands — EFI Shell”.
    “Shell Script Commands / Programming Constructs — EFI Shell”.

Command	Description
Boot Commands — EFI Shell. Commands related to nPartition booting.
autoboot	Set/view autoboot timeout variable.
bcfg	Display/modify the driver/boot configuration.
boottest	Set/view BootTest bits.
dbprofile	Display/modify direct boot profiles for use by lanboot.
lanboot	Boot over the LAN.
reconfigreset	Reset the system (nPartition) for reconfiguration; the nPartition remains inactive, in the shutdown for reconfig state.
reset	Reset the system (nPartition).
search	Connect drivers for bootables devices.
Configuration Commands — EFI Shell. Commands for changing and retrieving system (nPartition) information.
acpiconfig	Set/view ACPI configuration mode.
cellconfig	Deconfigure/reconfigure cells. (Set cell use-on-next-boot values.)
cpuconfig	Deconfigure/reconfigure processors and processor cores..
date	Display the current date or set the date of the system (nPartition).
dimmconfig	Deconfigure/reconfigure memory (DIMMs).
err	Display/change the error level.
errdump	View/clear logs.
fru	View FRU data.
info	Display hardware information.
monarch	Set/view a monarch processor.
palproc	Make a PAL call.
romdrivers	Enable/disable PCI expansion ROM drivers.
rootcell	Set/view preferred root cells. (Set nPartition core cell choices.)
salproc	Make a SAL call.
tftp	Performs TFTP operation to a bootp/DHCP enabled Unix boot server.
time	Display the current time or set the time of the system (nPartition). EFI time is set and presented in GMT (Greenwich mean time).
variable	Save/restore specific EFI variables.
ver	Display the version information.
Device, Driver, and Handle Commands — EFI Shell. Commands for managing devices, drivers, and handles.
baud	View serial port com settings.
connect	Bind a driver to a device.
dblk	Hex dump of BlkIo devices.
devices	Display devices managed by EFI drivers.
devtree	Display tree of devices.
dh	Dump handle info.
disconnect	Disconnect driver(s) from device(s).
drivers	Display list of drivers.
drvcfg	Invoke the Driver Config Protocol.
drvdiag	Invoke the Driver Diagnostics Protocol.
guid	Dump known GUID IDs.
lanaddress	Display MAC address.
load	Load EFI drivers.
map	Map shortname to device path.
openinfo	Display the open protocols for given handle.
pci	Display PCI devices or PCI function configuration space.
reconnect	Reconnect driver(s) from a device.
unload	Unload a protocol image.
Filesystem Commands — EFI Shell. Commands for managing files, directories, and attributes.
attrib	Display/change the attributes of files/directories.
cd	Update/view the current directory.
comp	Compare the contents of two files.
cp	Copy one or more files/directories to another location.
edit	Edit an ASCII or UNICODE file in full screen.
eficompress	Compress infile and write to outfile.
efidecompress	Decompress infile and write to outfile.
hexedit	Edit a file, block device, or memory region using hex.
ls	Display a list of files and subdirectories in a directory.
mkdir	Create one or more directories.
mount	Mount a filesystem on a block device.
rm	Delete one or more files/directories.
setsize	Set the size of a file.
touch	Update time of file/directory with current time.
type	Display the contents of a file.
vol	Display volume information of the file system.
Memory Commands — EFI Shell. Commands for listing and managing memory, EFI variables, and NVRAM details.
default	Set the default NVRAM values.
dmem	Dump memory or memory mapped IO.
dmpstore	Display all EFI variables.
memmap	Display the memory map.
mm	Display/modify MEM/IO/PCI.
pdt	View/clear nPartition or cell memory page deallocation table (PDT).
Shell Navigation and Other Commands — EFI Shell. Commands for basic EFI Shell navigation and customization.
alias	Set/get alias settings.
cls	Clear the standard output with an optional background color.
exit	Exit EFI Shell environment.
getmtc	Display current monotonic counter value.
help or ?	Display help.
mode	Display the mode of the console output device.
set	Set/Get environment variable.
xchar	Turn on/off extended character features.
Shell Script Commands / Programming Constructs — EFI Shell. EFI shell-script commands.
echo	Echo message to stdout or toggle script echo.
else	Script-only: Use with IF THEN.
endfor	Script-only: Delimiter for FOR loop construct.
endif	Script-only: Delimiter for IF THEN construct.
for	Script-only: Loop construct.
goto	Script-only: Jump to label location in script.
if	Script-only: IF THEN construct.
input	Take user input and place in EFI variable.
pause	Script-only: Prompt to quit or continue.
stall	Stall the processor for some microseconds.

Resets the system.

RESET [-w [string]]
RESET [-s [string]]

    -w       - Performs a warm reset
    -s       - Performs a shutdown
    string   - String to be passed to reset service

Note:
   1. Not all systems support the '-w' option.
   2. Reset will be guaranteed to reset the chipset as well as the processor
      when cold reset is called.
   3. This command does not support output redirection.