You don't have to reinstall Windows (unless it's the c:drive), but just delete the harddrive from within Disk manager. Of cause this only works if you have an external or another drive you can use temporarily. Here's a short guide.
Hit WIN+X and choose Disk manager
Find your drive, right click and choose delete
Right click on the same drive and choose new volume.
Go through the steps and your done.
Close samsung magician and open it again.
BOOM.. This worked for me 😁 😎
... View more