Hello, I ordered an rMBP and will be creating a Windows 7 partition on it. I will have my 2010 MBP (obviously with a disc drive; running Lion) at the same time, when it arrives. I'm following this guide (http://blog.laptopmag.com/how-to-install-windows-7-on-a-macbook-pro-with-retina-display) for the install. It runs through how to do the install on a rMBP with assistance of an external SuperDrive. Since I don't wish to pay the $80 for a Superdrive I'll only use once, I figured I could modify the first step in the guide by using this 2010 MBP. There are 5 steps in the guide; I don't foresee any issues with the last 4 steps. My question/problem pertains to just Step 1--also the only step I can do for now until the rMBP arrives. It says to create a Windows 7 ISO using the external SuperDrive connected to the rMBP. So, instead, I created the ISO using my 2010 MBP. Then it says: After creating the image, you have to copy it to a USB stick that’s at least 4GB in size. However, you simply can’t drag and drop it; you have to create a bootable image. In the Boot Camp Manager, select the option to copy it to a USB drive. That is where I'm stumped. I see no such option in my 2010 MBP's Boot Camp Assistant to "copy [the ISO] to a USB drive." Am I overlooking something or is something in the guide amiss? The only thing I can think of is that maybe only the Boot Camp Assistant included in the rMBP has that additional option ("Create a Windows 7 install disk. You need a USB flash drive and a Windows 7 ISO image.), which you can see in this image from the guide: If that is the reason for this discrepancy, presumably I can just take the non-bootable Windows 7 ISO I've already created in my 2010 MBP, transfer it to a flash drive, plug the flash into the rMBP, transfer the ISO off the flash drive onto the rMBP internal, and then the "Create a Windows 7 install disk" will create that bootable ISO in the rMBP? Thank you for any help.