1. Types
2. vcenter
3. vm
4. hardware
5. cdrom

## vcenter vm hardware cdrom: update spec

The `update_spec` structure describes the updates to be made to the configuration of a virtual CD-ROM device.

### Representations:

- JSON
- XML

{
"allow_guest_control": true,
"backing": {
"device_access_type": "EMULATION",
"host_device": "string",
"iso_file": "string",
"type": "ISO_FILE"
},
"start_connected": true
}
<?xml version="1.0" ?>
<ns0:UpdateSpec xmlns:ns0="http://vmware.com/vcenter/vm/hardware/cdrom" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<allow_guest_control>true</allow_guest_control>
<backing>
<device_access_type>EMULATION</device_access_type>
<iso_file>string</iso_file>
<type>ISO_FILE</type>
<host_device>string</host_device>
</backing>
<start_connected>true</start_connected>
</ns0:UpdateSpec>

#### Attributes:

Name | Type | Description
--- | --- | ---
Optional
backing | backing_spec | Physical resource backing for the virtual CD-ROM device. This field may only be modified if the virtual machine is not powered on or the virtual CD-ROM device is not connected. Optional. If unset, the value is unchanged.
start_connected | boolean | Flag indicating whether the virtual device should be connected whenever the virtual machine is powered on. Optional. If unset, the value is unchanged.
allow_guest_control | boolean | Flag indicating whether the guest can connect and disconnect the device. Optional. If unset, the value is unchanged.