Hello. I have got some problems trying to install Windows 7. My iMac's inbuild discreader is broken and i do not want to replace it with a new one.I have got a Lacie Disc Reader wich lets me put in discs in it and it reads. Its connected to my Mac with a firewire cable. Whenever i restart my computer so that i can install Windows 7, i get something like this: Cannot read disc insert a new one and press any key... Is it because i have a firewire disc reader? PLEASE help 😕