if [ -e "$BUILD_OUTPUT"/boot/grub/$GRUB_LEGACY ]; then
sed -i "s/%GRUB_LEGACY%/$GRUB_LEGACY/g" "$BUILD_OUTPUT"/boot/grub/menu.lst
sed -i "s/%GRUB_LEGACY%/$GRUB_LEGACY/g" "$BUILD_OUTPUT"/boot/grub/grub.cfg
if [ -e "$BUILD_OUTPUT"/boot/grub/$GRUB_LEGACY ]; then
sed -i "s/%GRUB_LEGACY%/$GRUB_LEGACY/g" "$BUILD_OUTPUT"/boot/grub/menu.lst
sed -i "s/%GRUB_LEGACY%/$GRUB_LEGACY/g" "$BUILD_OUTPUT"/boot/grub/grub.cfg