Whats the deal with the HDDs?

Am I the only one thats noticed that the HDDs storage capacity is nowhere near what they claim?

My Elite only has 106gb despite claiming 120gb

(thats taking into account game saves and downloads and I have cleared all the junk they preload onto the HDD as well.

So where is the lost 14gb?

It was the same with my 20gb HDD, I only had 13gb to use from what I recall.

Can MS actually do this, advertise that a HDD is x capacity when it isnt?

If the missing space is filled with system info etc then they shouldnt falsely advertise the HDDs usable storage capacity.

I am essentially missing 14gb which is A LOT of storage space, where is it and why cant I use it?

Cheers

James