USB Drives


Why does my operating system show the drive capacity as somewhat less than the model number?


Available capacity depends not only on the disk drive model, but also on how the operating system reports capacity figures. Some disk capacity is used for pre-loaded software, formatting and other functions, and therefore is not available for data storage. For example, a “320GB” model will not show as 320,000,000,000 bytes available.
·         1 MB = 1,000,000 bytes
·         1 GB = 1,000,000,000 bytes
·         1 TB = 1,000,000,000,000 bytes
As a result your operating system may report as fewer megabytes / gigabytes / terabytes.

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