It seems the OP has TWO (2) 120 GB drives installed accounting for a total of 240 GB of SSDs.
But what makes it more of a muddle is that he/she may need to have BOTH of those drives installed in order to boot to the OS because the System Reserved partition - the ACTIVE partition of a MBR-partitioned drive - has been installed on Disk 1 which does NOT contain the C: partition residing on Disk 0 (the other 120 GB drive). I do note that Disk 0 (containing the C: partition) is apparently a GPT-partitioned drive but I believe (although not totally sure) that Disk 1 would probably need to be installed in the system since the Active SR partition is located on that disk. But again, I'm certainly not sure about that with this drives'...