Mavericks does not recognize SanDisk microSD XC 64GB. FAT-21 formatted. Please Help. I tried the same card readers in both different mavericks (MBP and MAC Pro new) with 2 different microSD 64GB from SanDisk and mavericks says 'disk unit not recognized' or something similar. These 2 cards are read perfectly under Windows 7. However, other brands 64GB microSD XC under the same readers and mavericks are read perfectly. ALso these 2 microSDs are working perfectly with my Samsung tablet and MP3 devices.
Something is wrong with Mavericks and SanDisk MicroSD XC. I updated all drivers from the readers for Mac.
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Thanks for your help.
MacBook Pro (15-inch Early 2011), OS X Mavericks (10.9.3), Also for Mac Pro late 2013
Mac Software Download For Sandisk Ultra Plus Xc 1 64gb Micro Sd