An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.

A read channel module including an input, a location module and a generation module. The input is configured to receive a read-back signal from a rotating storage medium. The location module is configured to determine a location to insert a first imitation defect within the read-back signal. The first imitation defect imitates a first defect. The generation module is configured to (i) selectively generate the first imitation defect, and (ii) insert the first imitation defect in the read-back signal at the determined location.