Painfully frustrating problem at first.
After spending the good part of a whole day try and reading this post , I finally got it to work!!!
I just bought a MacBook Air mid 2013 version this week.
I also bought the Mac SuperDrive this week.
I have an old 1gb USB key.
I have an old genuine copy of Windows 7 64 bit professional CD disk (i did not use a Windows 7 USB key)
This is how i finally did it.
Step 1. Updated Mac software - straight forward
Step 2. I connected the USB superdrive to the RIGHT USB port (right side when facing the MAcbook Air)
Step 3. I connect my USB 1GB stick into the LEFT USB port
- here is where my problem was ..as i was not doing this precisely.
- u need to ERASE and FORMAT the USB KEY exactly by going through DISK UTILITY folder. Then you have to select the USB drive at the TOP-LEVEL listing. Then click ERASE, and select the MS-DOS (FAT) format.
(i think my problem was that i had done everything i will have listed here now but i was erasing the USB key by just dragging old contents into the garbage bin...not good enough!!!)
(explained in detail by Apple here....see link here step 9 http://support.apple.com/kb/TS4599)
Step 4. Leaving the USB key still in the LEFT USB port, I then used Bootcamp Assistant. After running Bootcamp set up, I then checked the option to Download Latest Windows Support Software from Apple. This downloaded automatically into the USB 2.0 key.
- leave the USB key in the left USB port
Step 5. Use Bootcamp Assistant to now choose the "Install Windows 7", and click continue.
- rest is straightfoward as per Bootcamp Manual. USB left in place until all installed.
http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.8.pdf
(I did not need to select and LOAD DRIVER at the Partition Step...as described above. I did try that earlier but it didnt work for me after several attempts in differing orders)
Hope that helps..i wish did it exactly like this from the begining. Overall took me around 60 minutes once i did it like this with my Window 7 prof 64 bit.