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Virtualbox 64 bit not available amd7/6/2023 ![]() ![]() Hand editing the XML file that defined my XP VM and adding a tag disabling long mode to the CPU section of the file did the trick. There did not seem to be a GUI hook in the Oracle VM management tool to disable LongMode. It would seem that, missing that tag, the latest version of VirtualBox defaults to enabling LongMode which, in turn, requires Vt-x. The Windows 7 VM, created by the latest incarnation of VirtualBox, had the tag and set it to false. In the older versions of the XML file that defined the XP Virtual Machine, there had been no LongMode tag. I was wrong, it is (was, actually, I finished my migration to Windows 7) a 32 bit machine.Īpparently, newer versions of VirtualBox have a VM configuration option called LongMode (I am not certain as to the capitalization, I am not in front of my machine). I had thought that the XP was 64 bit and would not start leading me to believe II had lost Vt-x capability. I could not build a Windows 7 x86_64 machine, only a 32 bit. My confusion was that my XP VM would not start complaining about a lack of Vt-x support. ![]() It turns out that my machine does not support Vt-x It never has.
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