Look for a volume with a name likeCIRCUITPY(the default for CircuitPython). The full
path to the volume is the/Volumes/CIRCUITPYpath.
Now follow thesteps from this question()to run these terminal commands that stop
hidden files from being created on the board:
mdutil -i off /Volumes/CIRCUITPY
cd /Volumes/CIRCUITPY
rm -rf .{,_.}{fseventsd,Spotlight-V*,Trashes}
mkdir .fseventsd
touch .fseventsd/no_log .metadata_never_index .Trashes
cd -
Replace/Volumes/CIRCUITPYin the commands above with the full path to your
board's volume if it's different. At this point all the hidden files should be cleared from
the board and some hidden files will be prevented from being created.
Alternatively, with CircuitPython 4.x and above, the special files and folders
mentioned above will be created automatically if you erase and reformat the
filesystem. WARNING: Save your files first! Do this in the REPL:
>>> import storage
>>> storage.erase_filesystem()
However there are still some cases where hidden files will be created by MacOS. In
particular if you copy a file that was downloaded from the internet it will have special
metadata that MacOS stores as a hidden file. Luckily you can run a copy command
from the terminal to copy files without this hidden metadata file. See the steps below.
Copy Files on MacOS Without Creating Hidden Files
Once you've disabled and removed hidden files with the above commands on macOS
you need to be careful to copy files to the board with a special command that
prevents future hidden files from being created. Unfortunately you cannotuse drag
and drop copy in Finder because it will still create these hidden extended attribute
files in some cases (for files downloaded from the internet, like Adafruit's modules).
To copy a file or folder use the-Xoption for thecpcommand in a terminal. For
example to copy a file_name.mpy file to the board use a command like:
cp -X file_name.mpy /Volumes/CIRCUITPY
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