XAIO Storage Issue

According to the datasheet the XAIO should have 256kb of storage, but its maximum capacity- when interfaced as CIRCUITPY- is only 47kb. Before formatting it as “CIRCUITPY” it has a little over 7 mb of storage. Am I doing something wrong?

7MB is a fake. On some operating systems, a usb flash disk with too small capacity will not be recognized.

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