WORKDIR=$(mktemp -d)
mkdir -p "$WORKDIR/kernel/x86/microcode"
cp /lib/firmware/intel-ucode/06-8d-01 \
"$WORKDIR/kernel/x86/microcode/GenuineIntel.bin"
(
cd "$WORKDIR"
find . | cpio -o -H newc --quiet
) > /mnt/lfs/sources/intel-ucode.img
rm -rf "$WORKDIR"
ls -lh /mnt/lfs/sources/intel-ucode.img
cpio -it < /mnt/lfs/sources/intel-ucode.img
install -m644 /sources/intel-ucode.img /boot/intel-ucode.img
ls -lh /boot/intel-ucode.img