Install windows 7 without an external cd-dvd drive for Mavarick
 1. edit the info.plist inside the bootcamp assistant file
2. place the Mac model and Rom info into the config file.
3. remove “Pre” from the PreUSBBootSupportedModels
4. sign the code like the following:
 cocain:~ Pree$ sudo codesign -f -s – /Applications/Utilities/Boot Camp Camp Assistant –deep /Applications/Utilities/Boot Camp Camp Assistant: replacing existing signature

cocain:~ Pree$