def METHOD_NAME():
    """
    Return list of disk devices
    """
    if salt.utils.platform.is_freebsd():
        return _freebsd_geom()
    elif salt.utils.platform.is_linux():
        return _linux_disks()
    elif salt.utils.platform.is_windows():
        return _windows_disks()
    else:
        log.trace("Disk grain does not support OS")