Disktest PRO is a Windows program to analyze, repair or modify 3.5" Double Sided High Density floppy disks sectors.
Provided free of charge, no nags, no time limits, no trial period, no spyware, no adware. Free for personal or business use. Charging for this program is forbidden. Charging for the physical support is accepted. Should only be used by someone who understand the inner structure of a floppy disk. Disktest PRO has a tricky interface. It was intended that way.