Hello Community, Recently I replaced Internal Optical drive in my Early 2011 Macbook Pro with OWC SSD. The SSD had problems two weeks back and I had to get it replaced with a new SSD from OWC. My problem is I don't have the bootable CD with me to install OS. Is there a way I can create a bootable USB flash drive and use it to boot my macbook? I thought of purchasing bootable Snow Leopard CD from Apple Store, but since I don't have internal optical drive in the bay, can I purchase external optical drive and use it to boot? I heard that external optical drives does not work well in macbook pros. If this is the case, are there other alternatives? Please help me! Thanks, Macraj.