So I recently installed a WD 240GB SATA SSD in my HP notebook series 15 laptop as it was super slow in whatever it did. The HDD was in the first slot and the SSD was installed in the second(free) slot as I read that a SSD can help improve the performance when the OS is moved into it. I tried changing the boot order by pushing the SSD as the primary storage device and the HDD as the secondary one, but failed as it said "no bootable devices found" once I change the order and hence the HDD is again given priority. I want to know how I can change the order and also how do I move my OS into the SSD from the already present HDD??