~
You would also need to make sure that the version of Electrum was still compatible with the OS in the future. So I assume you would need the current version of Electrum and the OS to be on the safe side or a working virtual machine with the correct version of the OS ?
well that is a very rare case, nearly all the times any application that can be run on an older version of an operating system can also be run on the new versions of it because they always keep backward compatibility. i'd say it is a far fetched possibility but it is possible still.
