User accessible data on a hard disk drive is organized into logical blocks called sectors. Sectors are, essentially, the amount of data that can be read from, or written to, a disk drive. Since the 1980s, sectors have almost universally been a 512-byte format, and operating systems, computer hardware and applications have been developed presuming 512-byte sectors to keep track of all the data files stored on the disk drive.
More recently though, the disk drive storage capacities have been increasing exponentially it seems with each new drive generation – from gigabytes to terabytes today. The result is that a single sector now represents a small fraction of the storage capacity. While this extra granularity may seem helpful, it actual...