FAQ: explain how to restore mounts to normal without rebooting tablet (…

…#89)

src/faqs.rst

@@ -156,11 +156,21 @@ If you need to make a change to a folder that is mounted as an overlay, you can
 .. code-block:: shell
 
   umount -l /etc
-     
-To see a full list of folders that have an overlay you can run the following command:
+
+To see a full list of folders that have overlays you can run the following command:
 
 .. code-block:: shell
 
   mount | grep overlay
 
 After making your changes and rebooting you should see your changes persist. But the overlay will be back and the filesystem will be read-only again.
+
+If you don't want to reboot, you can set the filesystems back to their normal state by running the following commands, IN THIS ORDER:
+
+.. code-block:: shell
+
+  mount -o remount,ro /
+  mount -o rw,relatime,lowerdir=/etc,upperdir=/var/volatile/etc,workdir=/var/volatile/.etc-work -t overlay overlay /etc
+  mount -o bind /home/root/.dropbear /etc/dropbear
+
+Note that you can get the value of the `-o` option in the second command by running the `mount | grep overlay` command noted above, *before* un-mounting anything.