I’m using an Intel X25-M Mainstream 80 GB SSD, and running Win7 Pro x64. When I first installed windows and all the drivers that came with my custom built pc, the SSD had about half of its memory full. That’s 40 GB of an 80 GB Solid State drive used for just the OS? Now, I opened the drive highlighted everything that appeared, yes even hidden items, and it only accounted for about 23 GB. My question is where is the other 17 GB of my SSD? Is Windows hiding that from me so it can restore itself? Maybe shadow copies? I don’t know. I’m learning how to use Win7, so I have Professional. Are there certain components I should disable or know about? I have a RAID for my storage purposes, so I would prefer windows to store all my documents/pictures/movies on the raid. I think I found the way to set that as default, by changed the “libraries” settings, but I’m not quite sure I did it properly. I also went into “security” settings and changed the “Back Up” location to the RAID. After all this, where is the other 17 GB or so, of my SSD? Thanks for your help in advance on this matter.