Сборка загрузочного образа grub2

grub2-mkimage \
    --config=grub.cfg \
    --directory=/usr/lib/grub/x86_64-efi \
    --format=x86_64-efi \
    --output=/var/lib/tftpboot/grubx64.pxe \
    --prefix=/ \
    $(find /usr/lib/grub/x86_64-efi -name '*.mod' -printf '%P\n')

grub-mkimage -c grub.cfg -d /usr/local/lib/grub/i386-pc --format=i386-pc-pxe \
    -o /tftpboot/grub.pxe pxe pxechain tftp http net \
    part_bsd part_gpt part_msdos boot biosdisk ext2 xfs lvm drivemap \
    gzio xzio lzopio cpio \
    loopback linux iso9660 udf memdisk chain \
    minicmd extcmd \
    ahci ehci ohci uhci \
    acpi lsacpi pci setpci reboot halt \
    help echo gfxmenu gfxterm font date configfile ls search vga vbe png video videoinfo loadenv