in the case where a magnetic transfer process is used to record a specific magnetic pattern during the magnetic disk manufacturing process , a read / write tester for conducting a glide height test and a read / write test and a particle testing means are provided at the front section of a magnetic transfer device . the tester records a specific magnetic pattern onto a magnetic disk in a magnetic transfer method . an optical testing device , a read / write tester for conducting a glide height test , and a read / write test in sampling are provided at the rear section of the device . this enables the detection of consecutive disk abnormalities caused by particles , which are adhered a master disk or put between the magnetic disk and the master disk . a transfer quality control device collects the results of the respective tests , so that the quality can be controlled using the results . accordingly , the present invention assures the desired quality of a magnetic disk produced after transfer .