So my hard drive in my macbook pro failed with noises beyond anything ive ever found on the internet. It was about time too, its been through 6 years of heavy video editing and music production and the plus that my mac took a couple minutes to start. so i just installed a new drive today(seagate SSHD 1tb) and now am faced with the issue of reinstalling mac os x. This is the only mac in my house, and none of my friends with macs seem to be much help. i dont have a recovery disk since i bought the mac used, and of course the recovery partition is gone. so im pretty much stuck. i managed to make a USB installer that would be detected by the EFI but it gave me the familiar prohibited sign when i tried to boot. this is the most successful ive been so far. right now im so desperate im installing windows right now just to gain back functionality of my laptop. I cannot seem to find a working iso or dmg on the internet so im pretty much at a loss. any help would be great! thanks in advance.