3.5-inch FDD head cleaning floppy disk. It will not abrade the magnetic head. How to use: Insert the cleaning disk into the drive. Load the head using the same procedure as reading a normal disk. Use commands like DIR or ls. When the disk spins and an error is displayed, cleaning is complete. After cleaning, check the label and confirm the number of uses. Replace it after approximately 60 uses. Try this if you experience read errors or strange behavior when using an FDD that hasn't been used for a while! It's a dry type, so it can be stored for a long time. If you store a lot of data on FD, errors are more likely to occur when you use the FDD after a long time, so it's safe to store it with your FD. It does not improve all situations. It can be expected to improve problems caused by head contamination. Magnetic data cannot be saved. YM-111