One card - many OS?

[tkaiser]

i have never seen the "df -H" fail in telling me the correct card size.

Great! If you believe the above nonsense you don't even understand  the whole fake/counterfeit card issue. The whole thing is about cards faking higher capacity (this is the stuff df, the Finder or the Explorer tells you) and the need to use f3 or h2testw to check for the real capacity (writing patterns on the card, reading them to verify them). 

So I would assume that also the stubborn lady still has not the slightest idea why that matters and why it's impossible to access anything beyond the few GB real capacity her nice 512GB fake card shows 

Good luck and happy wiki editing!