diff --git a/web/support/kb/cloud/Add_volume_for_nova.rst b/web/support/kb/cloud/Add_volume_for_nova.rst
index 553759991bfabd03ba77e21e7a623146bd6ec5ca..6901064e2e4a7cdf54113d12b4e796a7d60e299a 100644
--- a/web/support/kb/cloud/Add_volume_for_nova.rst
+++ b/web/support/kb/cloud/Add_volume_for_nova.rst
@@ -8,8 +8,14 @@ apt-get update
 
 apt-get install multipath-tools-boot 
 
+Individuare il wwid dei dischi
+/dev/sda e /dev/sdb con il
+comando:
 
-vi /etc/multipath.conf
+/usr/lib/udev/scsi_id --whitelisted --device=/dev/sda
+
+
+vi /etc/multipath.conf <- inserire wwid
 
 /lib/udev/scsi_id --whitelisted --device=/dev/sda