diff --git a/README.md b/README.md
index 58cdb9d..dfb1795 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ to the IP address you will associate to your VM
 
 Launch the generation:
 
-    $ packer build misp.json
+    $ packer build -only=virtualbox-iso misp.json
 
 A VirtualBox image will be generated and stored in the folder
 *output-virtualbox-iso*. You can directly import it in VirtualBox.
diff --git a/misp.json b/misp.json
index 5fe7b8d..6044ec5 100644
--- a/misp.json
+++ b/misp.json
@@ -2,18 +2,22 @@
     "variables": {
         "ssh_name": "packer",
         "ssh_pass": "packer",
-        "hostname": "packer"
+        "hostname": "packer",
+        "vm_name": "MISP_demo",
+        "disk_size": "10000"
     },
 
     "builders": [{
         "type": "virtualbox-iso",
         "guest_os_type": "Ubuntu_64",
+        "format": "ova",
+        "vm_name": "{{user `vm_name`}}",
 
         "vboxmanage": [
             ["modifyvm", "{{.Name}}", "--vram", "32"]
         ],
 
-        "disk_size" : 10000,
+        "disk_size": "{{user `disk_size`}}",
 
         "iso_url": "http://releases.ubuntu.com/17.04/ubuntu-17.04-server-amd64.iso",
         "iso_checksum": "ca5d9a8438e2434b9a3ac2be67b5c5fa2c1f8e3e40b954519462935195464034",
@@ -41,6 +45,42 @@
             "keyboard-configuration/variant=USA console-setup/ask_detect=false ",
             "initrd=/install/initrd.gz -- <enter>"
         ]
+    },
+    {
+        "type": "vmware-iso",
+        "guest_os_type": "ubuntu-64",
+        "vm_name": "{{user `vm_name`}}",
+
+        "disk_size": "{{user `disk_size`}}",
+
+        "iso_url": "http://releases.ubuntu.com/17.04/ubuntu-17.04-server-amd64.iso",
+        "iso_checksum": "ca5d9a8438e2434b9a3ac2be67b5c5fa2c1f8e3e40b954519462935195464034",
+        "iso_checksum_type": "sha256",
+
+        "http_directory" : "preseeds",
+        "http_port_min" : 9001,
+        "http_port_max" : 9011,
+
+        "ssh_username": "{{user `ssh_name`}}",
+        "ssh_password": "{{user `ssh_pass`}}",
+        "ssh_wait_timeout": "20m",
+        "ssh_pty" : "true",
+
+        "shutdown_command": "echo {{user `ssh_pass`}} | sudo -S shutdown -P now",
+
+        "boot_command" : [
+            "<esc><esc><enter><wait>",
+            "/install/vmlinuz noapic ",
+            "preseed/url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/preseed.cfg ",
+            "debian-installer=en_US auto locale=en_US kbd-chooser/method=us ",
+            "hostname={{user `hostname`}} ",
+            "fb=false debconf/frontend=noninteractive ",
+            "keyboard-configuration/modelcode=SKIP keyboard-configuration/layout=USA ",
+            "keyboard-configuration/variant=USA console-setup/ask_detect=false ",
+            "initrd=/install/initrd.gz -- <enter>"
+        ],
+
+        "skip_compaction": false
     }
 	],