grub-mkimage: Make a bootable image of grub

DESCRIPTION

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
-d, --directory=\,DIR\/: use images and modules under DIR [default=/usr/lib/grub/<platform>]
-k, --pubkey=\,FILE\/: embed FILE as public key for 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-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-efi, arm64-efi
-p, --prefix=\,DIR\/: set prefix directory [default=/boot/grub]
-v, --verbose: print verbose messages.
-?, --help: give this help list
--usage: 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.