/* Get the list of all disk objects. */
if (IOServiceGetMatchingServices (io_master_port,
IOServiceMatching (kIOBlockStorageDriverClass),
&disk_list) != kIOReturnSuccess)
{
/* Get the list of all disk objects. */
if (IOServiceGetMatchingServices (io_master_port,
IOServiceMatching (kIOBlockStorageDriverClass),
&disk_list) != kIOReturnSuccess)
{