No longwinded backstory in this post. I’m just posting this here so I can remember it if I ever have to install again, since I seem to keep forgetting.

If you’re trying to install Windows 8 (or Windows 7) on a MacBook Air, and you boot to the Windows CD (from a SuperDrive, of course), you may find that when you try to select the BOOTCAMP partition, you get an error stating that Windows can’t be installed on this drive, because it’s in GPT format, and you need to have an NTFS partition.

Well, it doesn’t matter if you have that partition formatted as NTFS or not. The error is happening because of the way you booted up!

Quit the installer, and restart, holding down the Option key. Then when the disk selection comes up, don’t select the Windows installer, select EFI Boot instead. That’s it!