Ok. I have read all I can find and still am not sure if I can install OSX on my USB external HDD. I have formated the HDD and it is bootable into DOS but not sure what to do after that. I have the Kalyway DVD and a USB DVD reader attached. My Acer One is running windows and I do not want to remove it from the internal HDD but would like to be able to run OSX. Can I add a second partition to the external HDD and format it to take OSX and leave the DOS partition or am I going about this the wrong way?