nextcloud
diff --git a/‎admin_manual/configuration_files/external_storage_configuration_gui.rst
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+13 b/‎admin_manual/configuration_files/external_storage_configuration_gui.rst
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+13
diff --git a/‎admin_manual/release_notes.rst
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+3 b/‎admin_manual/release_notes.rst
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+3
@@ -6,6 +6,12 @@ The External Storage Support application enables you to mount external storage
 services and devices as secondary ownCloud storage devices. You may also allow 
 users to mount their own external storage services.
 
+ownCloud 9.0 introduces a new set of :ref:`occ commands for managing external storage <files_external_label>`.
+
+Also new in 9.0 is an option for the ownCloud admin to enable or disable sharing on individual
+external mountpoints (see :ref:`external_storage_mount_options_label`). Sharing on such
+mountpoints is disabled by default.
+
 Enabling External Storage Support
 ---------------------------------
 
@@ -66,8 +72,15 @@ individually with the following options:
 
 * Encryption
 * Previews
+* Enable Sharing
 * Filesystem check frequency (Never, Once per direct access)
 
+The **Encryption** checkbox is visible only when the Encryption app is enabled. 
+
+**Enable Sharing** allows the ownCloud admin to enable or disable sharing on individual mountpoints.
+When sharing is disabled the shares are retained internally, so that you can re-enable sharing
+and the previous shares become available again. Sharing is disabled by default.
+
 .. figure:: external_storage/images/mount_options.png
    :alt: Additional mount options exposed on mouseover.
 
 
@@ -24,6 +24,9 @@ and PHP. ``owncloud-files`` installs only ownCloud. This is useful for custom LA
 allows you to install your own LAMP apps and versions without packaging conflicts with ownCloud.
 See :doc:`installation/linux_installation`.
 
+New option for the ownCloud admin to enable or disable sharing on individual external mountpoints
+(see :ref:`external_storage_mount_options_label`). Sharing on such mountpoints is disabled by default.
+
 Changes in 8.2
 --------------