Add instructions to mount and inspect encrypted backups (#425)

* Add instructions to mount and inspect encrypted backups

* Update site/source/user-manual/backups/backup-mount.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/backup-mount.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/backup-mount.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/backup-mount.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/backup-mount.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/backup-mount.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/index.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Update site/source/user-manual/backups/index.rst

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* Add suggested warning and a couple typo corrections

* grammar-ish-change

---------

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

site/source/user-manual/backups/backup-mount.rst

@@ -0,0 +1,47 @@
+.. _backup-advanced:
+
+=====================
+Advanced Backup Tools
+=====================
+
+.. contents::
+  :depth: 2 
+  :local:
+
+  .. warning:: The following are advanced tools and using them is only advised when under the instruction of a Start9 Support Technician.  USE AT YOUR OWN RISK - these operations are not supported outside of the context of support.
+
+.. _backup-mount:
+
+Mount a Backup
+--------------
+
+#. :ref:`Setup SSH Access<ssh>` and connect to your server via SSH.  Elevate yourself to root once in:
+
+    .. code-block:: bash
+
+        sudo -i
+
+#. Any previously added Network Folder backup location (or physical drive) will be available.  Enter the following command:
+
+    .. code-block:: bash
+
+        embassy-cli backup target list
+
+    .. figure:: /_static/images/backups/backup-target-list.png
+        :width: 60%
+
+#. Select the backup target from the available list.  In this example, we could use either ``disk-/dev/sdb1`` or ``cifs-1``:
+
+    .. code-block:: bash
+
+        embassy-cli backup target mount disk-/dev/sdb1 "YourMasterPasswordGoesHere"
+
+    .. figure:: /_static/images/backups/backup-mount.png
+        :width: 60%
+
+    The terminal will print the directory where your decrypted backup is now mounted.
+
+#. `ls` the directory to inspect it, and continue any other operations necessary:
+
+    .. figure:: /_static/images/backups/backup-mount-ls.png
+        :width: 60%

site/source/user-manual/backups/index.rst

@@ -30,6 +30,15 @@ In addition to the safe-keeping of a good master password, maintaining good back
 
   Restore your server data from a previous backup.
 
+.. topic-box::
+  :title: Advanced Backup Tools
+  :link: backup-mount
+  :icon: scylla-icon scylla-icon--live-test
+  :class: large-5
+  :anchor: View
+
+  Tools for backups - use only at the direction of support, or at your own risk.
+
 .. raw:: html
 
   </div></div>
@@ -40,3 +49,4 @@ In addition to the safe-keeping of a good master password, maintaining good back
 
   backup-create
   backup-restore
+  backup-advanced