I currently have 3 SATA drives. 1.5TB x2 and 1TB x1 Drive partitions as following: C: 499GB D: 897GB E: 499GB F: 897GB G: 931GB I am installing a new 2TB SATA 3 drive, but on SATA 2 mode for now. New config of drives will be quite similar except for that I will be merging the partition of the current drive which has the OS (C: & D 499GB + 897GB The new 2 TB drive will have 2 partitions C: 499GB and the rest D: The other drives will remain the same. SO for this purpose, will I need to reinstall my OS OR I can transfer my Current one to my new drive (backup and restore OR third party software) OR I can use the System Image of Windows 7 I had created a while ago just in case my OS went corrupt. I'm kinda confused and that's why I asked this question. I'm buying a Seagate drive so can I use DiscWizard EDIT: USERS WHO THINK I'M STUPID TO INSTALL 4 INTERNALS AS SATA AND NO RAID OR SSD, YOUR COMMENTS ARE NOT WELCOME.