How to convince USBMSC to disconnect and reconnect to host.

[spierepf]

I am following this example, using the same board (lolin-32-mini). https://github.com/drfailov/esp32-msc-spi-demo

By itself, the example works fine. However, I would like to add a WebServer and be able to upload files to the WebServer and have them appear on the flash drive.

I figure that the safest way to make that work is to unmount the flash drive when the upload begins and then remount the flash drive when the upload completes. The trouble is that I don't know how to achieve that. I've tried using the USPMSC::end() function, but it does not appear to unmount the flash drive from the host computer.

Is there anything else I should be doing to tell the USBMSC api to disconnect from the host?