DarkDragon85 Posted July 23, 2011 Share Posted July 23, 2011 Hi, until now I had installed Lion on external HDD and Snow Leopard in the internal HDD. When I booted the Mac I pressed the Alt key and I chose the external HDD to start Lion. But now I did the opposite: I have on internal HDD Lion and on USB Snow Leopard ... just that when I press alt at boot, the Mac don't recognize that it is plugged an external hard drive ... does anyone know why? Thank you so much!!! Link to comment Share on other sites More sharing options...
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