Windows 8 Bootup: Unexpected error 0xc0000225

The unveiling of Windows 8 this week has had mixed reception. Nonetheless, the reease of the Windows 8 Developer Preview has sparked curiosity among fans and skeptics alike. I am no exception.

Upon installing the Windows 8 Developer Preview under VirtualBox, though, the following error appeared:

Error 0xc0000225, very helpfully explained as "An unexpected error has occurred", prevents the Windows 8 installer from booting. Fortunately, however, getting it to run is simply a matter of enabling IO APIC from the Settings -> System screen. This blog post shows how it's done.