grub2-mkimage - Man Page

make a bootable image of GRUB


grub-mkimage [OPTION...] [OPTION]... [MODULES]


Make a bootable image of GRUB.

-c,  --config=FILE

embed FILE as an early config

-C,  --compression=(xz|none|auto)

choose the compression to use for core image


disable shim_lock verifier

-d,  --directory=DIR

use images and modules under DIR [default=/usr/lib/grub/<platform>]

-D,  --dtb=FILE

embed FILE as a device tree (DTB)

-k,  --pubkey=FILE

embed FILE as public key for PGP signature checking

-m,                              --memdisk=FILE

embed FILE as a memdisk image

Implies `-p (memdisk)/boot/grub' and overrides

any prefix supplied previously, but the prefix

itself can be overridden by later options

-n,  --note

add NOTE segment for CHRP IEEE1275

-o,  --output=FILE

output a generated image to FILE [default=stdout]

-O,  --format=FORMAT

generate an image in FORMAT available formats: i386-coreboot, i386-multiboot, i386-pc, i386-xen_pvh, i386-pc-pxe, i386-pc-eltorito, i386-efi, i386-ieee1275, i386-qemu, x86_64-efi, i386-xen, x86_64-xen, mipsel-yeeloong-flash, mipsel-fuloong2f-flash, mipsel-loongson-elf, powerpc-ieee1275, sparc64-ieee1275-raw, sparc64-ieee1275-cdcore, sparc64-ieee1275-aout, ia64-efi, mips-arc, mipsel-arc, mipsel-qemu_mips-elf, mips-qemu_mips-flash, mipsel-qemu_mips-flash, mips-qemu_mips-elf, arm-uboot, arm-coreboot-vexpress, arm-coreboot-veyron, arm-efi, arm64-efi, riscv32-efi, riscv64-efi

-p,  --prefix=DIR

set prefix directory

-s,  --sbat=FILE

SBAT metadata

-S,  --appended-signature-size=SIZE

Add a note segment reserving SIZE bytes for an appended signature

-v,  --verbose

print verbose messages.

-x,  --x509=FILE

embed FILE as an x509 certificate for appended signature checking

-?, --help

give this help list


give a short usage message

-V,  --version

print program version

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

Reporting Bugs

Report bugs to <>.

See Also

grub-install(8), grub-mkrescue(1), grub-mknetdir(8)

The full documentation for grub-mkimage is maintained as a Texinfo manual.  If the info and grub-mkimage programs are properly installed at your site, the command

info grub-mkimage

should give you access to the complete manual.


November 2023 GRUB 2.06