When transferring data from from the host OS to an external drive, we strongly recommend using Rsync. Rsync does have a GUI but some users find that limiting.
Luckily, the command line parameters are as easy as it gets.
To give a quick summary on the capabilities:
Using Rsync is simple, choose the parameters you would like to use from the above list and then specify the folders that you would like to move. The last path is the destination for the those folders. Also, we really recommend
--ignore-errors. It really smooths out the whole copy process.
In the below example, we copy Folder 1 and 2 to our destination. We get rsync sends us a verbose readout that is human readable and preserves timestamps, permissions, ownerships, and symlinks.
Also, to be clear, the folder path has to be formatted correctly:
An Example of a proper folder path is:
To learn more about the various commands Rsync has available, check out this great tutorial.
For for complete documentation check out the man page on Rsync