usage: efibootmgr [options] -a | --active sets bootnum active -A | --inactive sets bootnum inactive -b | --bootnum XXXX modify BootXXXX (hex) -B | --delete-bootnum delete bootnum (hex) -c | --create create new variable bootnum and add to bootorder -C | --create-only create new variable bootnum and do not add to bootorder -D | --remove-dups remove duplicate values from BootOrder -d | --disk disk (defaults to /dev/sda) containing loader -e | --edd [1|3|-1] force EDD 1.0 or 3.0 creation variables, or guess -E | --device num EDD 1.0 device number (defaults to 0x80) -g | --gpt force disk with invalid PMBR to be treated as GPT -i | --iface name create a netboot entry for the named interface -l | --loader name (defaults to \EFI\redhat\grub.efi) -L | --label label Boot manager display label (defaults to "Linux") -m | --mirror-below-4G t|f mirror memory below 4GB -M | --mirror-above-4G X percentage memory to mirror above 4GB -n | --bootnext XXXX set BootNext to XXXX (hex) -N | --delete-bootnext delete BootNext -o | --bootorder XXXX,YYYY,ZZZZ,... explicitly set BootOrder (hex) -O | --delete-bootorder delete BootOrder -p | --part part (defaults to 1) containing loader -q | --quiet be quiet -t | --timeout seconds set boot manager timeout waiting for user input. -T | --delete-timeout delete Timeout. -u | --unicode | --UCS-2 pass extra args as UCS-2 (default is ASCII) -v | --verbose print additional information -V | --version return version and exit -w | --write-signature write unique sig to MBR if needed -@ | --append-binary-args file append extra args from file (use "-" for stdin) -h | --help show help/usage