Hi, I have my imac apart right now and replaced the internal HD as it was not working. I assume the problem is the new one is not formatted with OSX, so from the INSTALL CD I opened the disk utility and see only one drive called "MEDIA".? Or is that just part of the install dvd that looks like a HD? In the system it shows as not formatted, 0 bytes. When selected in Partition it says : "This voume is the startup volume and cannot be erased. Size 7.1 GB The disk is not writable and cannot be partitioned" So i guess thats not my new HD I am seeing? Other than that there is only the two OSX install CD icons. So my new HD is not showing up or not working perhaps? Thanks in advance.