If a manufacturer tells you that his drive has a capacity of 40GB, he means that the drive has 40 billion bytes. HDToolbox calculates with "real" GB and 40 billion bytes are 37.2 real GB.
For a manufacturer a GB is 1000*1000*1000 bytes and for HDToolbox a GB is 1024*1024*1024 bytes (1,073,741,824).
Bye,
Thomas
