# Access to devices on the host

If you need to directly expose some host devices to a container, you can use
the devices parameter in the `Client.start` method as shown below

```python
c.start(container_id, devices=['/dev/sda:/dev/xvda:rwm'])
```

Each string is a single mapping using the colon (':') as the separator. So the
above example essentially allow the container to have read write permissions to
access the host's /dev/sda via a node named /dev/xvda in the container. The
devices parameter is a list to allow multiple devices to be mapped.