USB flash drive's capacity 2% smaller than advertized. Is this normal?
Solution 1:
I find this to be common on flash media. I've got a 256GB stick here that is 247,593,959,424 bytes (90.07%), and a 64GB SSD that is 62,813,896,704 bytes (91.4%).
I suspect the cited size is the chip size (and is binary), and that the actual size is after the wear leveling overhead and replacement blocks are removed.