How can I install boot camp off a Windows 7 USB flash drive? I'm trying to follow the directions on how to create a Windows 7 installation USB flash drive. I was able to create the drive and when I insert it into a Windows computer, it shows the installer correctly.

The problem is that when I get to the "Start Windows Installation" step in boot camp, it asks to insert the Windows disk. I inserted the USB drive, and it appears on the desktop, however, when I click Start Installation, I get the following error message:


  The installer disc could not be found.
  Insert your Windows installer disc and wait a few seconds for the disc to be recognized.
I'm having the exact same problem. I tried holding the option key when rebooting to see if I could boot from the USB key but I could not find a way to do this, so I installed rEFIt (then rebooted twice!) and THEN plugged in the USB key and the next time I rebooted it did show up as an option to boot from the USB key. 

I tried that and the windows installer loaded and it found the new bootcamp FAT32 partition. It said I couldn't install to the bootcamp partition because it requires NTFS.

This SuperUser post suggests "simply format the partition using the Windows installer's built-in utility (in other words, as part of the installation process)" so I did that continued with the install and everything works fine!