VirtualBox 2.2.2 VT-X True but Greyed Out Fix
Uncategorized May 15th, 2009 by Shai Perednik
UPDATE 6/10/09 – Looks like VirtualBox 2.2.4 has fixed this issue.
Why did the developers set this to default true and not allow the user to change it?
Here’s the fix via the VirtualBox Forums from user ykee
Modify the machines’s xml file
Change
<HardwareVirtEx enabled=”true”/>
TO
<HardwareVirtEx />
“the source code says that the default value is “false”, and this is how you force the program to use the default value.”
Tags: Mac, VirtualBox, VT-X
