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Implementation of the USBMSD class does not correctly appear in Mac OS as a mass storage device. The device shows up in the system information tree but not in disk utility. Blockdevice (tested with both HeapBlockDevice and a Custom SPIFBlockDevice) is formatted as FAT and working correctly with Windows 10.
The system information tree information is as follows, a working USBMSD has another section underneath it labelled 'Media:'
Changing the Vendor ID, Product ID and Serial number have no effect. Unsure if this is an issue with MacOS however the MSD through the MBED IF chip for the development board flash works correctly.
Relevent USB code that reproduces the issue:
Issue request type