The hard drive is a kind of non-volatile storage, which can retain stored data in powered off situations.

And in the early 1960s, for general-purpose PCs, hard drives were the primary secondary storage machine.

And until now, Toshiba, Western Digital and Seagate are still rolling out new hard drives.

image of hard drive

The prominent features of the hard drive are capacity and performance.

The largest hard drive capacity is pretty larger thanSSDcapacity.

So do you know the unit of hard drive size and the calculation method of it?

In addition, the difference between SI decimal prefixes units and binary prefixes can also cause the capacity difference.

As time goes by, MB is too small to meet the demand for calculating the hard drive capacity.

Now, the main units of the hard drive are GB (gigabytes) and TB (terabytes).

Usually, manufacturers use these SI-based units to indicate the total capacity of the hard drive.

When you are using the external hard drive, you may encounter an external hard drive not recognized issue.