I tried plop 5.0.10 and 5.0.12 and 5.0.13 iso image. Plop loaded successfully, but freeze when tried to detect usb device.I was able to detect the first usb device but freeze on the seconds. It was freeze even i did not connect to any mass storage device to machine.
Also, it seem that some internal devices are connected through usb bus (HD Webcam, Trackpad, IR Receiver, card reader)...
My machine is MacBook Pro 2011, 8,1. Core i7 2720M, 4G DDR3 RAM, 500G HDD\
Thank you