I just purchased a new mobo gryphon z87 (haswell) and currently using p8z68-v (sandy bridge). Ive read that The HDD windows must be reinstall. I have 2 HDD which is one is recently got win 7 installed. Can I just use the old HDD on the new mobo to make a slowly backup with pendrive since i dont have external HDD and transfer some of my file to new HDD. Sorry for my bad english. Does it affect anything on the new mobo?