hi, guys - i've got a late 2011 MBP running Lion 10.7.3. i recently formatted an external Seagate HDD to run Snow Leopard and i thought that i could just boot into the external HDD by holding down the Option key on restart. apparently, you can't. does Lion just refuse to recognize the SL partition on the external? or does something on the new hardware say 'No' to an older OS? i've tested booting the Snow Leopard external on another older MBP (Santa Rosa) running the same version software and that worked fine. is there now hope booting to the Snow Leopard external from Lion? if this has been posted elsewhere before, apologies and please feel free to send me the link. thanks in advance.