Magnetic pattern replication method and apparatus suitable for high-density, compact small diameter magnetic recording medium, and for which a master information carrier are proposed. The magnetic pattern replication method includes the steps of forming on one surface of the master information carrier a plurality of magnetic patterns corresponding to the information that is to be recorded on the disk-shaped magnetic recording medium having a diameter smaller than that of said master information carrier; bringing into contact and aligning said magnetic recording medium with the respective plurality of magnetic patterns formed on one surface of said master information carrier; and applying direct current magnetic fields corresponding respectively to said plurality of magnetic patterns to transfer said plurality of magnetic patterns formed on the master information carrier onto said contacting and aligned disk-shaped magnetic recording media corresponding to the respective said magnetic patterns.