I replaced the hard drive in my new 13" MacBook pro with the Seagate 500gb 7400rpm. I rebooted with the OS startup disk and selected utilities and restore system from back up. Then I selected my external hard drive which has my time machine backup on it. Well the next windo says "select the volume where you want to restore your system" but my 500gb drive is not listed there. WTF!?!? please help!!