Boot your PC using your UniBeast installer USB. Don't try the main drive, choose "External". Don't install anything either. When the menu comes up, go to the Tools menu and select Disk Utility. Run it and perform First Aid on the main drive. That will tell you if corruption is the problem
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.