I've been trying the whole day to install Windows 7 via Bootcamp on my 2013 Macbook Air. I'm installing it via USB, and using the official Windows 7 iso image from Microsoft (can be downloaded from their website). My USB is a Kingston Ultimate Datatraveler 3.0 32GB. Everytime the installation starts, it says that it needs some drivers for CD/DVD-drive. Anyone who have experienced this before? Like this: Please help!