diff --git a/README.md b/README.md
index e4b7d89..276dd5b 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,14 @@ masterKVMIP=192.168.0.X
 slaveKVMIP=192.168.0.Y
 ~~~
 
+Script add-vm.sh assume you have two LVM Volume Group named "ssd" and "hdd".
+
+You can override this by adding a Bash array in /etc/evolinux/add-vm.cnf, eg:
+
+~~~
+disks=("VG1" "VG2")
+~~~
+
 ## Dry-run mode
 
 You can use the dry-run mode by setting doDryRun var in config file: