Hi, I have a white plastic 2008 MacBook Model. I have an SD card reader and my computer will mount SD cards just fine. But when I put in my new SanDisk 32 GB Micro-SDHC (with passive adapter), my OS just tells me "The disk you inserted was not readable by this computer." Is there any way to fix this? Is it an OS problem or is it a problem with my Card reader? Thanks in advance.