Ok, I love using google and reading all the forums and I couldn't find a solution to my problem. I just built a new pc and now installing windows 7 64. The os its going to be on one Intel 520 120gb ssd and other storage is going to be 2 western digital hdd's in a mirrored raid 1. With raid enabled windows sees the ssd and raid but can't install it on the ssd with a message saying "setup was unable to create a system partition". I went into the bios disabled the raid and left it in ahci mode, disconnected the 2 hdd's. I went and windows installed ok on the ssd. Before I go any further I need ask if my procedure was correct. I remembered on my last system I had to install drivers for the raid during the windows installation. Please advise because I feel like something it's wrong. Thank you for taking the time to help.