efibootmgr
Synopsis
efibootmgr [command]... [option]...
Description
The efibootmgr utility is used from a script file to manager the EFI Boot variables. The
efibootmgr utility is used for creating or destroying the EFI BOOT variables and to update the
BOOT NEXT, BOOT ORDER, and TIMEOUT variables. The BOOT ORDER variable defines the
boot entries sequence to be shown in menu. The TIMEOUT sets the time-out to select automatically
the boot variables, according to BOOT ORDER. The BOOT NEXT sets the next boot entry to be
selected automatically disregarding the BOOT ORDER and TIMEOUT.
Options
Table 5-9 efibootmgr Options
DescriptionOptions
Set bootnum active.
-a | --active
Set bootnum inactive.
-A | --inactive
Delete bootnum (hex).
-B | --delete-bootnum
Create new variable bootnum and add to bootorder.
-c | --create
Display the help and exit.
-h | --help
Create a netboot entry for the named interface.
-i | --iface name
Set BootNext to XXXX (hex).-n | --bootnext XXXX
Delete BootNext.
-N | --delete-bootnext
Explicitly set BootOrder. The values must be in hex.
-o | --bootorder
XXXX,YYYY,ZZZZ,...
Delete BootOrder
-O | --delete-bootorder
Set boot manager timeout waiting for user input.
-t | --timeout seconds
Delete Timeout.
-T | --delete-timeout
Return version and exit.
-V | --version
Table 5-10 Commands
DescriptionCommands
Defines the file to include more options.
-@ | --@ file
Selects BootXXXX (hex) variable to be deleted.
-b | --bootnum XXXX
Device file that the boot loader stores (defaults to /dev/sda).-d | --disk disk
Forces EDD 1.0 or 3.0 creation variables or guess.
-e | --edd [1|3|-1]
EDD 1.0 device number (defaults to 0x80).
-E | --device num
Forces disk with invalid PMBR to be treated as GPT.
-g | --gpt
Sets the ACPI HID (used with -i).-H | --acpi_hid XXXX
Boot loader file name. The full path must be informed if necessary (defaults to
\elilo.efi).
-l | --loader name
efibootmgr 83
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