/etc/os-release existence is only enforced in --boot mode,
therefore the term "starting" (which also applies to chroot-like mode)
is substituted with "booting" in this context.
<para>As a safety check <command>systemd-nspawn</command> will verify the existence of
<filename>/usr/lib/os-release</filename> or <filename>/etc/os-release</filename> in the container tree before
- starting a container (see
+ booting a container (see
<citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>). It might be
necessary to add this file to the container tree manually if the OS of the container is too old to contain this
file out-of-the-box.</para>