diff --git a/README.md b/README.md
index 15ea717..877c565 100644
--- a/README.md
+++ b/README.md
@@ -1,42 +1,45 @@
 # Linux
 
-- [Distro](#distro)
-- [Graphical Environment](#graphical-environment)
-  - [Display Managers](#display-managers)
-    - [cli - utils](#cli---utils)
-  - [Graphical Applications](#graphical-applications)
-    - [Gnome Files/Nautilus](#gnome-filesnautilus)
-- [Commands and Utilities](#commands-and-utilities)
-  - [Navigation and File Management](#navigation-and-file-management)
-  - [Archiving and Compression](#archiving-and-compression)
-    - [tar](#tar)
-  - [Users, Groups, and File permissions](#users-groups-and-file-permissions)
-  - [loginctl](#loginctl)
-    - [terminate-user](#terminate-user)
-  - [Network Configuration](#network-configuration)
-    - [hostname / hostnamectl](#hostname--hostnamectl)
-    - [static ip](#static-ip)
-  - [network utilities](#network-utilities)
-    - [ss - another utility to investigate sockets](#ss---another-utility-to-investigate-sockets)
-  - [processes](#processes)
-  - [System info](#system-info)
-  - [System Monitoring Utilities](#system-monitoring-utilities)
-    - [btop](#btop)
-    - [memory usage by user](#memory-usage-by-user)
-  - [ps - examples](#ps---examples)
-    - [swap](#swap)
-  - [Storage](#storage)
-    - [Disk Space and Used](#disk-space-and-used)
-    - [Physical Disks and Partition](#physical-disks-and-partition)
-    - [hdparm](#hdparm)
-    - [smartctl](#smartctl)
-  - [Network Storage](#network-storage)
-    - [smb](#smb)
-    - [gio](#gio)
-  - [CLI Diagnostics and System Topology](#cli-diagnostics-and-system-topology)
-    - [lspci](#lspci)
-  - [sudo](#sudo)
-  - [rsync](#rsync)
+- [Linux](#linux)
+  - [Distro](#distro)
+  - [Graphical Environment](#graphical-environment)
+    - [Display Managers](#display-managers)
+      - [cli - utils](#cli---utils)
+    - [Graphical Applications](#graphical-applications)
+      - [Gnome Files/Nautilus](#gnome-filesnautilus)
+  - [Commands and Utilities](#commands-and-utilities)
+    - [Navigation and File Management](#navigation-and-file-management)
+  - [mount disks](#mount-disks)
+    - [Archiving and Compression](#archiving-and-compression)
+      - [tar](#tar)
+    - [Users, Groups, and File permissions](#users-groups-and-file-permissions)
+    - [loginctl](#loginctl)
+      - [terminate-user](#terminate-user)
+    - [Network Configuration](#network-configuration)
+      - [hostname / hostnamectl](#hostname--hostnamectl)
+      - [static ip](#static-ip)
+    - [network utilities](#network-utilities)
+      - [ss - another utility to investigate sockets](#ss---another-utility-to-investigate-sockets)
+    - [processes](#processes)
+    - [System info](#system-info)
+    - [System Monitoring Utilities](#system-monitoring-utilities)
+      - [btop](#btop)
+      - [memory usage by user](#memory-usage-by-user)
+    - [ps - examples](#ps---examples)
+      - [swap](#swap)
+    - [Storage](#storage)
+      - [Disk Space and Used](#disk-space-and-used)
+      - [Physical Disks and Partition](#physical-disks-and-partition)
+        - [Partition Manager](#partition-manager)
+      - [hdparm](#hdparm)
+      - [smartctl](#smartctl)
+    - [Network Storage](#network-storage)
+      - [smb](#smb)
+      - [gio](#gio)
+    - [CLI Diagnostics and System Topology](#cli-diagnostics-and-system-topology)
+      - [lspci](#lspci)
+    - [sudo](#sudo)
+    - [rsync](#rsync)
 
 ## Distro
 
@@ -83,7 +86,7 @@ systemctl status display-manager
 
 ### Navigation and File Management
 
-📁 List  information  about the FILEs (the current directory by default).
+List  information  about the FILEs (the current directory by default).
 
 ```bash
 #order by date 
@@ -96,11 +99,16 @@ ls -r
 ls -lah
 ```
 
+## mount disks
+
+- <https://linuxvox.com/blog/ubuntu-automatically-mount-drive/>
+- <https://www.cyberciti.biz/faq/how-to-run-script-after-mounting-nfs-with-systemd-in-linux/>
+
 ### Archiving and Compression
 
 #### tar
 
-**📦 tar** is a command-line utility in Unix/Linux used to archive multiple files into a single file, often for backup, compression, or distribution. The name stands for “tape archive”, originally designed for writing data to magnetic tape.
+**tar** is a command-line utility in Unix/Linux used to archive multiple files into a single file, often for backup, compression, or distribution. The name stands for “tape archive”, originally designed for writing data to magnetic tape.
 
 **Flags:**