I have a Samsung Evo 850. I've noticed that sometimes it still seems to spin up the D drive which is my other hard drive and makes me wait. I can double click on something, and I'll notice that its taking a while. Then I'll hear the D drive (my old 500gb seagate) spinning up and finally the document will open. Then I'll check to make sure, and sure enough the file is located on my C drive, which is the Samsung SSD. And not on the old hard drive. Any idea why its doing this? I bought a SSD so I didn't have to wait on this kind of thing anymore. And most of the time, I don't. But it does this frequently enough to be annoying.