I'm sorry if this isn't the right forum or area, but I need some help. I was trying to install Windows 7 on bootcamp from a USB drive, but somehow I messed up. I couldn't boot into OS X and Win 7 wasn't installing, so I formatted the whole drive. Windows 7 is now working fine, but I'd like to get OS X Lion back in my Macbook Air 13" 2011 base model. I have the OS X Lion dmg image, but I have no way of burning it, all I have are Windows Pcs. This was my first Mac and I managed to mess it up after 1 day . Could I just drag and copy the dmg OS X Lion image to the usb drive in Windows, or what should I do. PowerISO won't let me mount the image. I don't care about losing Windows 7. Thank you for any help.