I recently purchased a 128 gig card to replace my old 64 gig one in my samsung galaxy s4, ad I've run into a few issues. I copied all of my files onto a new folder on my desktop, and then onto the new card. My card only registered about 25 songs out of my 4000, and almost all my pictures were gone, and those that copied could not be displayed. I formatted the new card and continued to run into this problem, but I've also found that I can't see certain files on my old card. For instance I have a folder that had 13 pictures in it, and when it's displayed on my phone it shows that there are 13 photos on the card, but when I look at it on my computer I can only see 8. I have other folders of 100s that are completely missing while viewed on my computer, but show up on my phone. I have show hidden files checked. Please help!