Hi Michele,
I would then accept the serviceability of your hardware as de facto and not, at this time, run it again. But it is good to remember that as lessons learnt, and store away in the memory bank for use later as and when required. I have just read the reply above from Csound, and he is correct in his analysis and execution plan to solve even more of the outstanding issues!
Just one tiny difference, the utility (program) might be called WD Utility, or WDDrive Utility. It might be grouped together with others in the Other folder under Applications.
Kindly inform us when you have and where you have found it. We will advise you about the best way to get rid of it.
But, meanwhile, Backup that data as suggested by Csound!
About OS X Memory Management and Usage
Using Activity Monitor to read System Memory & determine how much RAM is used
OS X Mavericks- About Activity Monitor
Understanding top output in the Terminal
The amount of available RAM for applications is the sum of Free RAM and Inactive RAM. This will change as applications are opened and closed or change from active to inactive status. The Swap figure represents an estimate of the total amount of swap space required for VM if used, but does not necessarily indicate the actual size of the existing swap file. If you are really in need of more RAM that would be indicated by how frequently the system uses VM. If you open the Terminal and run the top command at the prompt you will find information reported on Pageins () and Pageouts (). Pageouts () is the important figure. If the value in the parentheses is 0 (zero) then OS X is not making instantaneous use of VM which means you have adequate physical RAM for the system with the applications you have loaded. If the figure in parentheses is running positive and your hard drive is constantly being used (thrashing) then you need more physical RAM.
Adding RAM only makes it possible to run more programs concurrently. It doesn't speed up the computer nor make games run faster. What it can do is prevent the system from having to use disk-based VM when it runs out of RAM because you are trying to run too many applications concurrently or using applications that are extremely RAM dependent. It will improve the performance of applications that run mostly in RAM or when loading programs.