thanks a lot!! you fixed my (fake 16GB) player with this today..
I was aware of both programs,
but the english version of mydisktest was most welcome!
I ran that first, this showed me the fake mem (I already knew)
next step was to isolate all bad blocks, after this both the fake and real (4GB) memory showed up in properties
then I got rid of the fake part, with chkflsh, and made the real memory active
finally, the actual memory is displayed correctly in both windows & on the player..