Questions like this have been asked before, but I haven't found an answer yet. My apologies if I missed something.
I am going to Antarctica for a year, and my access to the internet will not be guaranteed. I wish, therefore, to create a local back-up of the data I have stored in Dropbox. I know that I could, in theory, download everything to my laptop and copy it from there - but the internal hard drive of my laptop is not sufficient to contain all the data I have saved to Dropbox. Neither do I want to set an external drive as the default location for my Dropbox to sync to, because I read that there are risks involved in doing this. How, then, can I download everything from the could to the external drive directly?