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The notebook's Remote Disc feature has been touted as a unique method of accessing media over a wireless connection by "borrowing" another Mac's drive. But MacFixit has confirmed with Apple that the same technology, combined with OS X's NetBoot software, can be used to boot the Mac from an OS X installation disc.

This means that it will be possible to boot the new MacBook from an installation disc in order to run troubleshooting applications such as Disk Utility and the Hardware Test, or to reset the admin password.

"This revolutionary capability was accomplished, firstly, via some major refinements to the system's EFI (Extensible Firmware Interface),' MacFixit explained. "Robust wireless support had to be added, especially with regard to using secured WiFi networks."

This suggests that it may be possible for Apple to extend the feature to other Intel Macs via an EFI update.