I searched but didn't find any threads that seemed to address my exact problem, so I'm posting this. Okay, I'm on a Mac. Here's my problem: I'm trying to transfer a 14gb file onto my Adata 16gb MicroSD card, to then view on my phone. By default, the card was in MS-DOS format (which, I discovered, has a single file transfer limit of 4gb). Again, I'm trying to transfer 14gb onto it. So, I reformatted it to Mac OS Extended (which has no such transfer limit). The result was that I could get the file onto the card, but when I tried to read the card with my Galaxy, it said it's blank/has an unsupported format. I need to get the file onto the card, but in a format the S2 will then read. Any help would be greatly appreciated. Thanks!