A device is provide including: a storage device comprising a memory configured to store configuration data used for test booting for a process of testing the device, before the test booting; and a controller configured to perform the test booting using the stored configuration data when receiving a start signal of the test booting, to control the process of testing the device to be performed afterthe test booting, and to delete the configuration data stored in the storage device when a completion signal of the process of testing the device is received.