With so much riding on optical discs—your games, movies, backups—you need to have a good repair system. We tested five popular cleaning and repair kits on deeply scratched CDs; they all clean well, ...

For the most part, Macs don’t crash as much as other computers. One reason for that is that the Mac doesn’t have to contend with an unpredictable mix of hardware and software: OS X is highly optimised ...