I was thinking that they may have partitioned off a FAT32 section which you could mount to. Vibrant and the Gentouch have done that. Though from a post on tmobiles board, it didn't look like the missing amount was mounted. Total for the partitions was 2169356.
What do you see when you plug in your USB, just the SDCard, or do you get a notice about an internal memory as well?
Nexus 5 & 7 (2013) - CM 11, AOSP, CM 10.2
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