Hi,

I tried replicating your test and it worked for me so I'm not sure what's going on without knowing more about which Runtime, python version, etc you're using. But regardless, perhaps `dbutils.fs.cp` would be an easier way of doing what you're trying to achieve? You could call it directly from a python notebook cell and not have to make `subprocess` calls.

Details here: https://docs.databricks.com/en/dev-tools/databricks-utils.html#cp-command-dbutilsfscp

Thanks.