I decided to buy an SSD to replace my hard drive as the boot drive which currently has been partitioned to three drives, one of which has the OS installed. The question is can I migrate the OS from the one partition to the SSD or will I have to delete all the partitions and move all the data from the hard drive? The hard drive is 1TB where the OS partition is ~100GB and the other two are both ~400GB which are both occupied by games and such and the SSD will be 240GB.