If you upgrade all your installed programs and all your data files are retained (for example Xara Designer and all your XAR files).

I've upgraded a Surface Pro 3 but the upgrade won't work on my big Dell box. (I always get the error 80070002 20009.) I've tried various fixes and troubleshooters but no luck so far. The next best advice on the net is to disconnect the second Hard Drive and try again.

Phil