Miss match between reported free space and white squres

Defraggler
1

Hello,

I have a little more than 40% free space but I see very few white squares.

I have lots of blue, light blue, red and a few more colours. I do not see in the legend the meaning of the light blue.

Why is the miss match?

Thank you,

Tamir :-)

2

There is an explanation here Tanababa

http://docs.piriform.com/defraggler/using-defraggler/understanding-the-drive-map