diff --git a/README.md b/README.md
index 96ed59c..aac92be 100644
--- a/README.md
+++ b/README.md
@@ -174,6 +174,14 @@ apt-get install ntfs-3g
 mkntfs --fast --label Backups /dev/sdc1
 ```
 
+## space usage
+
+df 
+
+df -h  
+
+du -h --max-depth=1  
+
 ## Manutenção de discos
 
 Bad Sectors