Some third - party manufacturers produced floppy drives that could write 40 tracks to most 5.25 - inch disks , yielding 160 kB of storage per disk .
The format did not catch on widely , and no known commercial software was published on 40 - track media .
Some third - party manufacturers produced floppy drives that could write 40 tracks to most 5.25 - inch disks , yielding 160 kB of storage per disk , but the format did not catch on widely , and no known commercial software was published on 40 - track media .