diff --git a/README.md b/README.md
index bdec8f6..fae41d7 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 
 ## Quick Start
 
-### If the backup disk is different from the installation disk:
+### Create mount point in system:
 
 Copy the UUID of your external disk:
 
@@ -39,6 +39,10 @@ Reload system dameon:
 
     sudo systemctl daemon-reload
 
+Mount disks:
+
+    sudo mount -a
+
 
 ### Modify custom service:
 
@@ -78,8 +82,8 @@ Enable backup service:
 ### Modify script:
 ```
 # Paths
-# Default backup saved on external disk
-external_disk=true
+# Unmount disk after save backup (default is true)
+unmount_dick=true
 
 # Disk backup mount point
 backup_path="/backup-disk"
@@ -99,7 +103,9 @@ The default path is ExecStart=/home/backup-files.sh
 
     sudo cp backup-files.sh /home/
 
+Concede execute permission:
 
+    sudo chmod +x /home/backup-files.sh
 
 ### Test script commands:
 
@@ -127,8 +133,6 @@ Start service:
 
 ## View Backup Files
 
-### If the backup disk is different from the installation disk:
-
 Show disks:
 
     sudo lsblk
@@ -137,10 +141,6 @@ Mount the external disk. An example command contains disk /dev/sdb1 and a mount
 
     sudo mount /dev/sdb1 /backup-files
 
-</br>
-
-### Or if the backup disk is the installation disk:
-
 Enter the folder configured for the script backup-files.sh:
 
     cd /backup-files 
diff --git a/backup-files.sh b/backup-files.sh
old mode 100644
new mode 100755
index 9f64375..169da0a
--- a/backup-files.sh
+++ b/backup-files.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 
 # Paths
-# Default backup saved on external disk
-external_disk=true
+# Unmount disk after save backup
+unmount_dick=true
 
 # Disk backup mount point
 backup_path="/backup-disk"
@@ -44,19 +44,17 @@ perform_backup() {
     return 0
 }
 
-# Check if the mount point exists and disk is mounted
-if [ external_disk ]; then
-    # The mount point disk not exists
-    if [ ! -d "$backup_path" ]; then
-        mkdir -p "$backup_path"
-        echo "Mount point disk created"
-    fi
 
-    # The disk not mount
-    if ! mountpoint -q "$backup_path"; then
-        echo "Mounting disk..."
-        mount "$backup_path"
-    fi
+# The mount point disk not exists
+if [ ! -d "$backup_path" ]; then
+    mkdir -p "$backup_path"
+    echo "Mount point disk created"
+fi
+
+# The disk not mount
+if ! mountpoint -q "$backup_path"; then
+    echo "Mounting disk..."
+    mount "$backup_path"
 fi
 
 
@@ -66,10 +64,10 @@ for (( i=0; i<${#origins[@]}; i++ )); do
 done
 
 
-if [ external_disk ]; then
-    # Umount disk
+# Unmount disk
+if [ "$unmount_dick" = true ]; then
     if mountpoint -q "$backup_path"; then
-        echo "Umounting disk..."
+        echo "Unmounting disk..."
         umount "$backup_path"
     fi
 fi