grub-mkimage说明

SYNOPSIS
       grub-mkimage [OPTION]... [MODULES]
DESCRIPTION
       Make a bootable image of GRUB.
       -d, --directory=DIR
              use images and modules under DIR [default=/usr/lib/grub/i386-pc]
       -p, --prefix=DIR
              set grub_prefix directory [default=/boot/grub]
       -m, --memdisk=FILE
              embed FILE as a memdisk image
       -f, --font=FILE
              embed FILE as a boot font
       -c, --config=FILE
              embed FILE as boot config
       -o, --output=FILE
              output a generated image to FILE [default=stdout]
       -h, --help
              display this message and exit
       -V, --version
              print version information and exit
       -v, --verbose
              print verbose messages