Comment 22 for bug 121943

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Jan Claeys (janc) wrote : Re: Intrepid, Hardy: Gparted freezes with external USB HD

It would be useful if we could determine the number of unused blocks in another way... :-/

As I told @gedakc on IRC before, it seems like the FAT filesystem header (? I need to investigate some more) has an optional field that may store that number, but the fact that it's optional doesn't sound like we can count on it...

And I guess something similar is true for NTFS: seems like detecting free space (sometimes?) requires us to walk all over the whole filesystem...