# Building a memdisk (see grub2-mkstandalone in grub-2.00)
__memdisk() {
   out="$1"
   arch="$2"
   mods="$3"
   libdir=/usr/lib/grub
   conf=$(mktemp)

   printf 'search.fs_uuid %s root\n' $UUID_флешки >> $conf
   echo "set prefix=\"(\${root};)/boot/grub/${arch}\"" >> $conf
   echo 'configfile /boot/grub/grub.cfg' >> $conf

   # Iteratively include all dependent modules
   while [ "${mods}" != "${oldmods}" ]; do
    oldmods="${mods}"
    for modname in ${mods}; do
     deps=`sed -n "s/^${modname}://p" ${libdir}/${arch}/moddep.lst`
     mods="${mods}${deps}"
    done

    mods=`echo ${mods} | tr ' ' '\n' | sort -u`
   done

   grub-mkimage -O ${arch} -p "" -o ${out} -c ${conf} ${mods}

   mkdir -p /boot/grub/${arch}
   cp -r /usr/lib/grub/${arch}/* /boot/grub/${arch}/
     
   rm -f ${conf}
}

   # based on gen-efi from liberte linux by mkdesu
   efidir=/EFI/BOOT
   ia32name=BOOTIA32.EFI
   x64name=BOOTX64.EFI
     
   # Included modules (command.lst, partmap.lst, fs.lst, video.lst)
   modules_core="normal configfile echo test true minicmd ls search gzio"
   modules_fs="part_msdos part_gpt iso9660 fat ext2 hfsplus loopback"
   modules_boot="boot linux halt reboot chain appleldr"
   modules_arch="cpuid loadbios efi_gop efi_uga fixvideo"
   modules="${modules_core} ${modules_fs} ${modules_boot} ${modules_arch}"
     
   # Generate EFI binaries with modules in memdisk
   mkdir -pv /media/usb_drive/${efidir}
     
   __memdisk /media/usb_drive/${efidir}/${ia32name} i386-efi   "${modules}"
   __memdisk /media/usb_drive/${efidir}/${x64name}  x86_64-efi "${modules}"