+usage() {
+ cat <<EOF
+Usage: ${0##*/} [-h|--help]
+reinstall chboot to /boot subvols, for chboot updates.
+
+We install to /boot in case there is an issue booting and only the /boot
+vol is readily available. For the bootstrap subvol, this is the normal
+case.
+EOF
+ exit $1
+}
+case $1 in
+ -h|--help) usage ;;
+esac
+
+