How To Enable 64-bit Version Option in VirtualBox?

VirtualBox is a popular open-source virtualization software that allows users to run multiple operating systems on a single computer. One key feature is the ability to create and run 64-bit virtual machines. However, sometimes the option to enable the 64-bit version may not be available by default. This article will guide you through the steps to enable the 64-bit version option in VirtualBox.

Prerequisites for 64-bit Virtualization

Before enabling 64-bit support, ensure your system meets these requirements

• 64-bit capable processor with virtualization support (Intel VT-x or AMD-V)

• Virtualization enabled in BIOS/UEFI

• Sufficient RAM (at least 4GB recommended for host + guest)

• VirtualBox Extension Pack installed (optional but recommended)

Step 1 Verify Your Processor

First, confirm that your processor supports 64-bit virtualization. On Windows, type "System Information" in the Start menu search. On macOS, go to Apple menu > About This Mac > System Report.

Look for the Processor field. If it shows x64-based Processor, your system supports 64-bit. Additionally, check if virtualization extensions are available

# Windows - Check virtualization support
systeminfo | findstr /i "virtualization"

# Linux - Check CPU flags
grep -E "(vmx|svm)" /proc/cpuinfo

Step 2 Enable Virtualization in BIOS/UEFI

Restart your computer and enter BIOS/UEFI setup (usually F2, F10, F12, or Delete key during boot). Look for virtualization settings under different menu names

Enable the virtualization option and save changes before exiting BIOS.

Step 3 Configure VirtualBox Settings

Open VirtualBox and follow these steps to enable 64-bit support

For New Virtual Machines

• Click New to create a virtual machine

• In the Type dropdown, select your OS (e.g., Linux, Windows)

• In the Version dropdown, you should now see 64-bit options

• Select the appropriate 64-bit version (e.g., "Ubuntu (64-bit)")

For Existing Virtual Machines

• Select your virtual machine and click Settings

• Go to System ? Motherboard tab

• Check Enable I/O APIC

• Switch to Processor tab

• Check Enable PAE/NX

• Go to System ? Acceleration tab

• Ensure Enable VT-x/AMD-V is checked

• Set Paravirtualization Interface to "Default" or "KVM"

Troubleshooting Common Issues

64-bit Options Still Not Visible

• Hyper-V conflict Disable Hyper-V on Windows via "Turn Windows features on or off"

• Nested virtualization Cannot run VirtualBox inside another virtual machine without special configuration

• Insufficient resources Ensure at least 2GB RAM allocated to the VM

Performance Optimization

For better 64-bit VM performance

• Allocate sufficient RAM (minimum 2GB, recommended 4GB+)

• Enable multiple CPU cores in Processor settings

• Install VirtualBox Guest Additions in the guest OS

• Use VDI or VMDK disk format with dynamic allocation

Benefits of 64-bit Virtual Machines

Conclusion

Enabling 64-bit support in VirtualBox requires proper hardware with virtualization extensions, BIOS configuration, and correct VirtualBox settings. Once configured, 64-bit virtual machines provide better performance, increased memory support, and compatibility with modern applications that require 64-bit architecture.