> > I thought that is quite good, but you obviously have a better idea? > > Maybe I didn't understand right then. These zero regions are just for > describing > empty sectors within non-empty clusters? But why are you concerned about > mostly empty images then?
They are more likely than Petabyte images. Anyway, I guess I can support 64bit address space by using 9bytes overhead. There is no need to use 16bytes.
