It seems funny with this card for sure and I cannot figure out why yet.

I formatted it and it said it had 8088 x 1M.

I cloned the OS in the 2nd partition and left 7G for vfat. I did copy 5G of music in there too.
However, if I booted from flash then I can write to it otherwise I can't.

If it is not 8G they did a good magic on it. I haven't found any bad mp3 file yet.