4GB is very mediocre. Some situations that come to mind: 0) I've had Original OS installation occur fairly frequently (testing against the bleeding edge, test

4GB is very mediocre. Some situations that come to mind: 0) I've had Original OS installation occur fairly frequently (testing against the bleeding edge, testing installs against a clean install) 1) The installation of new software. 2) Anything with VMs. 3) The last set of builds I signed was 12GB for each set. Individual package files (which is what I needed to sign) didn't fit onto the 4GB USB sticks we had widespread. If there's a more classical use case for an airgapped secure computer, do tell. If you're confident that you're dealing with plain vanilla USB sticks, what advantage does communicating over rewritable DVDs have over rewritable USB sticks? Both are just as "verified" forms of two-way communication.