Basic question: Can I install Mavericks on an external USB drive, then clone it (using latest SuperDuper) to an internal SSD drive in the Optibay? Can 10.6.8 (my current OS) co-exist on the HDD in the main bay? My Current configuration: Early 2011 MBP HDD in Original Bay. SSD in Opti-bay. (Currently) Single boot to 10.6.8 with Parallels My Goal: Mavericks on my SSD in Optibay Keep 10.6.8 on my HDD in the main bay (Eventually put Windows 7 on the HDD, via bootcamp) I've read a lot of threads, but... everybody's outcomes seem so different. The clone method seems to overcome the limitation of installing onto SSD in the optibay. But will an install to external USB configure the install to that particular hardware setup? Thank you!