On 31/03/2024 11:46, David Wright wrote:
Double-clicking on the directory mounts it and displays the files in it. Opening a text file displays it. At least for a small file, FF does not hold the file open, so I can immediately unmount the stick.
Gmail may do something more fancy - https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file - https://developer.mozilla.org/en-US/docs/Web/API/File_System_API I am not surprised that the device is busy for some interval of time.