Well, thanks for that tutorial, but that wasn't really my question - I forgot to mention that I have successfully dualbooted multiple times. My question was is there a way to preserve ndless between dual boots?

I've been using ndless on my CX for a long time. Then I discovered nlaunch, and instantly switched over, making derivatives/integrals/etc. a breeze. But now that I'm on winter break, I've thought extensively about either running ndless on 3.1 CAS, or dual booting CAS 3.2.3 and CX 3.1 with ndless. However, I've hit a snag. 

The nspire student software/computer link both determine OS based on hardware - so when I try to transfer CAS ndless to my calculator, it denies it. So my other route is not to single boot, but rather to dual boot.
My question is, will I be able to switch between CX and CAS without a computer while still running ndless?