The Windows discussion on 32 and 64-bit OSes also applies here - you should install the 64-bit flavor of Ubuntu if you're using a 64-bit machine. In addition, for 64-bit Windows guests, you should make sure that the VM uses the Intel networking device, since there is no 64-bit driver support for the AMD PCNet card see the section called “Virtual networking hardware”. If the Type and Version don't automatically change with the name, make sure they're set to Linux and Ubuntu (64-bit) respectively before clicking Next. Which means it installs on your existing Intel or AMD-based computers, whether they are running Windows, Mac, Linux. This is especially true for 64-bit Windows VMs. VirtualBox for Ubuntu (64-bit) is a cross-platform virtualization application. On any host, you should enable the I/O APIC for virtual machines that you intend to use in 64-bit mode. (Note it's OK to be running a 32-bit kernel, the processor just has to be capable. You can check your exact CPU model on the Intel or AMD spec sites to see. That's called VT-x for Intel or AMD-V for AMD. In the pop-up window, navigate to the Device specifications section and check the System type. Press Win + E keys to open the File Explorer, and then right-click This PC and select Properties. Since supporting 64 bits on 32-bit hosts incurs additional overhead, VirtualBox only enables this support upon explicit request. In order to run 64 bit guest OSes in VirtualBox, you must have a 64-bit capable processor with virtualization acceleration features. If you are using a 2 bit CPU, you will encounter the VirtualBox not showing 64 bit issue. If you want to use 64-bit guest support on a 32-bit host operating system, you must also select a 64-bit operating system for the particular VM. You must enable hardware virtualization for the particular VM for which you want 64-bit support software virtualization is not supported for 64-bit VMs. You need a 64-bit processor with hardware virtualization support (see the section called “Hardware vs. VirtualBox supports 64-bit guest operating systems, even on 32-bit host operating systems, provided that the following conditions are met: Virtualbox supports running a 64-bit guest VM on a 32-bit physical host, but there are some requirements and other caveats:
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