Hello I did update the W8 system to W 8.1 a couple of days ago through the store. It worked fine till I wanted to use my CAD software. It spit the dummy. I did not want to install again(as some other stuff wasn't working well either) in the updated version of W8 so I used an image to get back to W8. I am thinking now to dual boot 8 and 8.1, install all the programs I need in w8.1(in the spare time) and then start work in W8.1 and delete W8. How well do those two systems work side by side? Has anyone here done that? Has anyone removed the old system afterwards? Would be nice to hear?