I just received my new macbook pro and accidentally erased the volume hd (one that shows 500gb and specs etc) upon a reset. It doesn't show in Disk Utility. All that appears is Macintosh HD which the utility will only allow me to verify and repair just like the original poster. The Mac boots directly to the Utility Menu upon restart. Ive tried the recovery system, and the only disc I can get to show upon reboot is a recovery hd but it is locked. Any help would be greatly appreciated! Thank You!