- <title>Initrd System Manager Bootup</title>
- <para>The default target in the initrd is the initrd-fs.target. The bootup process is
- identical to the System Manager Bootup until it reaches basic.target. From there,
- systemd approaches the special initrd.target. If the root device can be mounted at
- /sysroot, the sysroot.mount unit becomes active and the initrd-root-fs.target is
- reached.
- The initrd-parse-etc.service scans /sysroot/etc/fstab for a possible /usr mountpoint
- and additional entries marked with the <emphasis>x-initrd.mount</emphasis> option.
- All entries found are mounted below /sysroot, and the initrd-fs.target is reached.
- The initrd-cleanup.service isolates to the initrd-switch-root.target, where cleanup
- services can run. As the very last step, the initrd-switch-root.service is activated,
- which will cause the system to switch its root to /sysroot.
+ <title>Bootup in the Initial RAM Disk (initrd)</title>
+ <para>The initial RAM disk implementation (initrd) can
+ be set up 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
+ <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
+ approaches the special target
+ <filename>initrd.target</filename>. If the root device
+ can be mounted at <filename>/sysroot</filename>, the
+ <filename>sysroot.mount</filename> unit becomes active
+ and <filename>initrd-root-fs.target</filename> is
+ reached. The service
+ <filename>initrd-parse-etc.service</filename> scans
+ <filename>/sysroot/etc/fstab</filename> for a possible
+ <filename>/usr</filename> mount point and additional
+ entries marked with the
+ <emphasis>x-initrd.mount</emphasis> option. All
+ entries found are mounted below
+ <filename>/sysroot</filename>, and
+ <filename>initrd-fs.target</filename> is reached. The
+ service <filename>initrd-cleanup.service</filename>
+ isolates to the
+ <filename>initrd-switch-root.target</filename>, where
+ cleanup services can run. As the very last step, the
+ <filename>initrd-switch-root.service</filename> is
+ activated, which will cause the system to switch its
+ root to <filename>/sysroot</filename>.