Of all the hardware on a PC, none gets more attention or gives more anguish than the hard drive. There’s a good reason for this: if the hard drive breaks, you lose data. As you probably know, when the data goes, you have to redo work or restore from backup or worse. It’s good to worry about the data, because the data runs the office, maintains the payrolls, and stores the e-mail. This level of concern is so strong that even the most neophyte PC users are exposed to terms such as IDE, PATA, SATA, and controller even if they don’t put the terms into practice.