I have the Verizon galaxy s5 and for the longest time, I had the 16gb micro sd card in it. Just recently, I bought a 128gb Samsung class 10 micro sd card and for some reason, every time I would add music to the card (either by cable connected to pc or by putting the micro sd card in a card reader and into my computer) it would delete certain folders randomly, and my photos would show an error.
I have a Samsung Galaxy Grand with a 16gb micro-sd card. For some inexplicable reason, I am losing data on the sd card. Folder names are being changed to start with the character "μ." For example, my_music was changed to μy_music (this does not happen on the device's internal memory). There are more than 960 files with the name "μ" and it is replicating itself.