You burn the ISO to DVD or to usb flash card (4.4GB+)
Copy the ISO to your disk and try using that to write the ISO to (another) USB device.
Instructions for the Air: https://support.apple.com/kb/HT4407
download a free iso burning program for Mac (we used SimplyBurns Mac). That program runs you through the necessary steps to properly burn the iso file you need.
After doing so, Bootcamp recognized the installation file and everything worked as it should.
SimplyBurns is a Mac OS X application with a GUI, which allows the user to burn CD / DVD media.
Features:
- Emphasis on ease of use
- Audio CD project, Data project (Filesystems: ISO9660, Joliet, HFS+, UDF) and Burn image mode
- Erasing rewritable media
- Persistence
http://simplyburns.en.softonic.com/mac
Here's instructions on burning an ISO with Disk Utility:
http://lifehacker.com/251758/mac-tip--how-to-burn-an-iso-or-dmg-file-to-disc
And this thread on burning a Windows DVD in OSX:
https://discussions.apple.com/thread/2039118?start=0&tstart=0
(Summary: you can use Disk Utility to burn the ISO, but choose a slow burn speed)
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http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.7.pdf
create a Windows support software (drivers) CD or USB storage media
http://support.apple.com/kb/HT4407
The Boot Camp Assistant can burn Boot Camp software (drivers) to a DVD or copy it to a USB storage device, such as a flash drive or hard drive. These are the only media you can use to install Boot Camp software.
https://support.apple.com/kb/HT4569
Windows 7 FAQ Answers to commonly asked Windows 7 questions.
http://www.apple.com/support/bootcamp/
