A technology developed by Panasonic/Mastsushita and used in the LS-240 SuperDisk Drive that allows 32 megabytes to be stored on a standard 1.44 megabyte 3.5 inch floppy disk.

The technology works be reformatting the disk and increasing it's number of tracks from 80 (on a standard high-density stiffy disk) to 777 tracks. This accomplished by reducing the width of each track from 87.5 microns to 18.8 microns.