Hey everybody. Just wondering if anyone knows what is going on here. I have had this iMac 24" running lion for 5 months now and two days ago I started getting this screen at startup that shows a grey screen that show my hard drive and backup. I can click on my hard drive and it will startup normally, then starts with desktop and Mail inbox and Activity Monitor already started up. Why is it booting to this grey screen showing hard drive. I have not installed any software or anything to cause this. Anyone had this problem before. Thanks.