After these steps, everything will be lost forever. So the question is how do you format a hard drive using exFAT? The answer is even more straightforward.īefore we go ahead, if you have anything on your drive, make sure to backup everything. If you don’t know, exFAT was created to be used on flash drives like USB or SD cards. It is where exFAT or Extended File Allocation Table comes into the picture. So I needed a format which is both read and write on both the systems. I am the kind of person who needs to switch between both the OS daily. Format Hard Drive in exFAT for both Mac & Windows PC