Just got a chance to install the Windows 8 Developer Preview on VirtualBox today. When I created my virtual machine, I accepted the default settings. I got this error message when I booted up the machine.
Status: 0xc0000225 Info: An unexpected error has occurred.
I remembered that my friend told me you have to enable IO APIC on VirtualBox. I enabled it and it worked. To enable that, select the virtual machine you created. Click on the Settings and then System. Check the box that saysEnable IO APIC.
Another tip about running Windows 8 Developer Preview on VirtualBox is that you have to use the Intel Pro Desktop as the network adapter. The default network adapter did not work.
To change it, open up the settings dialog. Click on Network. Click on the triangle next to Advnaced to expand it. Under Adapter Type, select Intel PRO/1000 MT Desktop.
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