Virtualbox: 'Enable Nested VT-x/AMD-V' greyed and unable to change
On my Debian 12, I've installed VirtualBox 7.0 in order to install ProxMox to setup a home lab.
However, When I open the settings of my virtual machine and go to System -> Processor, the option "Enable Nested VT-x/AMD-V" is greyed out and I cannot enable it.
Note:
- Virtualization is enabled in my bios.
- The Virtual machine's status is currently off.
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Answers
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It is required to have Virtualzation enabled in the BIOS but as it is already mentioned that it is enabled.
Follow the steps to enable it:
- Open Terminal and go to directory where your VM is installed.
cd /home/sachin/VirtualBox\ VMs/
- Execute the following command to Enable Nested VT-x/AMD-V"
# Syntax: # VBoxManage modifyvm you-mv-name --nested-hw-virt on # Example: VBoxManage modifyvm proxmox-host-1 --nested-hw-virt on
You can follow these documentation for more:
- https://www.virtualbox.org/manual/ch03.html
- https://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvm You are looking for "nested-hw-virt"
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