+Mixed change_root and pivot_root mechanism
+------------------------------------------
+
+In case you did not want to use root=/dev/ram0 to trigger the pivot_root
+mechanism, you may create both /linuxrc and /sbin/init in your initrd image.
+
+/linuxrc would contain only the following:
+
+#! /bin/sh
+mount -n -t proc proc /proc
+echo 0x0100 >/proc/sys/kernel/real-root-dev
+umount -n /proc
+
+Once linuxrc exited, the kernel would mount again your initrd as root,
+this time executing /sbin/init. Again, it would be the duty of this init
+to build the right environment (maybe using the root= device passed on
+the cmdline) before the final execution of the real /sbin/init.
+
+