Hi guys, well I'm new to the forums. Today I just replaced my old Fujitsu 160GB HD for a WD 320BEVT. I have a white 2.4GHz MB got it around Aug 08. I have gone through the steps of how to install the new HD into the MB and I did everything correctly. But when I try to power on the MacBook, the MB does not recognize the HD. I have taken out the HD and putting it in more securely about 5 times, but there is no luck... I also went into Disk Utility and I only see the Mac OSX CD and no HD. I even tried going in to the Disk Profile and lucky it has the HD and some of it's specs. I also tried holding down Alt when it boots, but I see a "Flashing Earth" symbol. Is there something I'm doing wrong? Or is the HD faulty even though I see it in Disk Profile. Help would be appreciated and thanked.