Not having both is a silly waste of space, as well as wear and tear on the internal drive. The drives should be additive. Of course this is asking for the obvious as D* has said before that this feature is in the que, just not high priority.
I certainly agree with that! Lots of other stuff to work on that do more good for more people. It's not like there's no room on the existing drive, or it was terribly under sized.
I agree...and in reality it's not all that unusual in the world of computers to toss a smaller drive when upgrading. It'd be nice if they used both...but there are certainly more important things that need to be done.