The storage capacity of HDDs continues to increase every year. In 2012, Toshiba started shipments of large capacity HDDs of 3 TB or higher. Although the adoption of large capacity HDDs can increase the usability of a system, users need to be aware that when HDDs with a capacity of 2.2 TB or larger are installed, some systems do not recognize the full capacity size of the drive if there is a system mismatch. If this occurs, please contact the system builder, the operating system (OS) maker, in which HDD is installed. An example of this phenomenon is explained below