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What does it mean to run a virtual OS in "headless mode"?

I've been hearing a lot about about how the new version of VMWare Fusion can run virtual operating systems in "headless mode".

A Google search makes it clear that other virtualisation products also have similar features, however, I have not been able to find a good description of what this actually means? What is happening when you do this?

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Binarytales Avatar asked Oct 05 '08 13:10

Binarytales


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What is headless mode in VM?

Headless mode is a useful feature for starting virtual machines. Thereby, the virtual machine will not be started from the VirtualBox GUI, but rather from the command line. A graphical popup window with the virtual machine's console will not appear.

How do you run a headless virtual machine?

Start VBoxHeadless from the VirtualBox Manager GUI, by pressing the Shift key when starting a virtual machine or by selecting Headless Start from the Machine menu.

What is headless and detachable start in VirtualBox?

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2 Answers

Headless mode means that the virtual machine is running in the background without any foreground elements visible (like the Vmware Fusion application)
You would have no screen to see running the front end; i.e. the screen/console would not be visible, even though the operating system is running, and would typically have to access the machine via SSH.

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Petesh Avatar answered Sep 21 '22 08:09

Petesh


For anyone that is interested, you can activate headless mode in VMWare Fusion by running the following command in Terminal.app

defaults write com.vmware.fusion fluxCapacitor -bool YES 
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Binarytales Avatar answered Sep 18 '22 08:09

Binarytales