diff --git a/userdata.json b/userdata.json
index be8c256..4c48973 100644
--- a/userdata.json
+++ b/userdata.json
@@ -35,6 +35,13 @@
     },
     "timezone": "Europe/Uzhgorod",
     "username": "placeholder",
+    "volumes": [
+        {
+            "device": "/dev/sdb",
+            "mountPoint": "/volumes/sdb",
+            "fsType": "ext4"
+        }
+    ],
     "useBinds": true,
     "ssh": {
         "rootKeys": [