Today I removed the optical drive from my late 2009 iMac and installed an SSD in its place. Everything works perfectly, except for one thing...my optical drive fan goes crazy when I turn the iMac on. It goes to full blast and it sounds like my computer will blast off into space at any time. I'm aware that this is a common issue when replacing/upgrading hard drives, and so I did some research and found an app called SSD Fan Control that fixed the problem for the most part. In a nutshell, the fan runs at normal speed and is quiet when I'm logged in and actually using the computer, thanks to SSD Fan Control. However, when I turn the iMac on and it's at the white boot-up screen with the Apple logo, the fan goes up to full blast. Once the computer logs in, the fan quiets down because SSD Fan Control is set to launch at login. I was wondering if there's a way to make it so that the fan is quiet at the boot screen too...it's quite annoying turning my iMac on and hearing that obnoxiously loud whirring sound as it's booting up. Is it possible, or can it just be controlled while I'm actually logged in? Any help is greatly appreciated!