How to create a .cookie file on Bitcoin Core?
I place the bitcoin blockchain file on a separate drive that can be accessed via the Bitcoin core on macOS and Windows OS (virtual machines). If it's already created, the .cookie file should be in that directory, correct?
When you enable RPC (without a password), it creates the file automatically. You need to open Core, Settings -> Options -> Open configuration file. It will open your bitcoin.conf. See in which directory this .conf file is. In the same directory, you will see the .cookie file if you already enabled RPC and restarted Core. Get that same directory and use it on the "Directory" field on bwt.