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Before You Start
5
Chapter 1
Getting Started
About Memory Capacity Representation
About the Product Capacity Representation Standard
The memory capacity reported in Windows is less than the actual capacity of memory.
About the capacity representation of the storage
The capacity of the storage device (HDD, SSD) of the manufacturer is calculated assuming that 1KB=1,000 Bytes.
This is because BIOS or a video adapter uses a portion of memory
or claims it for further use.
(E.g. For 1GB(=1,024MB) memory installed, Windows may report
the capacity as 1,022MB or less)
However, the operating system (Windows) calculates the storage
device capacity assuming that 1KB=1,024 Bytes, and therefore the
capacity representation of the HDD in Windows is smaller than the
actual capacity due to the difference in capacity calculation.
(E.g. For a 80GB HDD, Windows represents the capacity as 74.5GB,
80x1,000x1,000x1,000 byte/(1,024x1,024x1,024)byte = 74.505GB)