I have failed countless times to install this OS and I have no other means of installing it. I have tried to boot from a USB and it displayed an error saying "isolinux.bin missing or corrupt" and I have ran sudo dd on my usb about 6-8 times now with a few different versions of Ubuntu but still no progress. I don't want to have to result to using Virtual Box as I want the actual operating system to boot from. I am using refind and rEFIt as it boots as the one and I have the option to boot to the other. I have tried to use a wireless DVD drive but I found out it doesn't work and I don't have the time or money to buy a USB optical drive. Can someone please tell me if my Macbook Air is actually compatible with Ubuntu. I am running Mac OSx 10.6.8. If anyone wants some more detail on the question then can you please e-mail me at: firstname.lastname@example.org please.