Hi all! Yesterday I installed Yosemite on my 4.1 Mac Pro, everything went fine. today I enabled Trim with Trim enabler, I restarted and then I got a grey screen with a circle and a slash. I tried to boot up in CMD > V mode, and got this. https://dl.dropboxusercontent.com/u/1104426/IMG_9426.JPG https://dl.dropboxusercontent.com/u/1104426/IMG_9427.JPG I also tried Target mode with my MBP. My Boot SSD from the Mac Pro appears? But why can't it boot. "still waiting for root device" What does it mean.