On your Disk 0, the disk that has the F: drive, there is also a 100 MB System Reserved partition. After you get your C: drive transfered, it needs to come off the Disk 0. == Just to be sure, you can boot your computer without the 120 GB SSD, right? There is a tutorial that tells you how to transfer your 64 GB to the 120 GB. SSD - Install and Transfer the Operating System
The first few paragraphs tell about getting the bracket to put it in the PC, but you know that. You can start reading further down the page at "Transfering the Operating System". There are two ways to do it. The first option is free but has many steps and a lot of things to do. If you are not really up on PC's, it could be confusing. The second option is to pay $19.95 and get a program that does everything in a few minutes. Paragon Migrate OS to SSD - System migration to Solid State Drives (SSD) - Overview
This link is in the tutorial but, I just wanted to make sure you found it. Before you do either step you need to format your 120 GB SSD so that nothing is on it. Let me know if you have any questions. == One more thing. When you transfer your OS, the 120 GB will become your C: automatically and the 64 GB will be assigned a new letter. == One more thing. When doing the transfer of OS, only the 64 GB SSD and the 120 GB SSD should be plugged into your Motherboard. This is to stop files from getting on wrong partitions.