using systemd as well. In this case, boot up inside the initrd
follows the following structure.</para>
- <para>The default target in the initrd is
+ <para>systemd detects that it is run within an initrd by checking
+ for the file <filename>/etc/initrd-release</filename>.
+ The default target in the initrd is
<filename>initrd.target</filename>. The bootup process begins
identical to the system manager bootup (see above) until it
reaches <filename>basic.target</filename>. From there, systemd