Complete Guide on Host Key in VirtualBox

Last update: 07/02/2025
Author Isaac
  • The host key is used to switch between the host system and the virtual machine in VirtualBox.
  • Multiple actions can be performed such as entering full screen mode or simulating combinations such as Ctrl+Alt+Del.
  • The host key can be customized to suit the user's needs.

virtualbox host key

For those who work with Virtual machines, knowing and mastering the keys and shortcuts in VirtualBox is essential. This software allows you to manage multiple OS on a single computer, but to optimize its use, it is important familiarize yourself with key functions such as host key, also known as host key. What exactly is this key? How is it used? And, above all, how can it help you? to improve your productivity in VirtualBox? Today we will answer these questions in detail.

In VirtualBox, the host key plays a crucial role. This key acts as a species "gateway" between your main operating system and the virtual machine you have started. Its main function is to allow you to switch between both systems or run determined actions within the virtual machine without compromising the functionality of the host system. Below, we will break down all the details you need to know about this key element.

What is the host key and what is it used for?

La host key In VirtualBox it is a special key that allows to interact seamlessly between the main operating system (host) and the virtual machine. By default, this key is usually the right ctrl, located just below the Enter key on most keyboards. The main idea behind this key is to release the control from the virtual machine's keyboard and mouse, returning it to the host operating system.

Furthermore, the host key plays a key role in certain specific key combinations. For example, when you need to perform actions such as entering full screen mode, restart the virtual machine or adjust the window size to the guest size, this key acts as the main modifier.

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How to use the host key in VirtualBox

Using this key is pretty straightforward. To start, once you're interacting inside the virtual machine, the host key allows you to release the controls to return to the main system. This is useful when you need to perform actions outside of the virtual machine without having to shut down or pause it.

For example, if you want to enter or exit the full screen mode, just press host key + F. Similarly, to activate the "fluid display" mode, where applications installed on the virtual machine appear to run directly on your host system, press host key + L.

Another common use is when you need to simulate the key combination Ctrl + Alt + Del within the virtual machine. This is achieved by pressing the host key + Del. This action is particularly useful if you are working with operating systems such as Windows, where this combination is essential to access certain administrative options.

Setting and customizing the host key

An interesting feature of VirtualBox is that it allows customize la host key to adapt it to your needsIf the default location of this key is not comfortable for you, you can change it by following a few simple steps:

  • Open VirtualBox and go to the menu Archive.
  • Choose Preferences and then go to the section of Tickets.
  • Within the “Virtual Machine” tab, you will find the option to modify the host key. Click this option and select a new key that is more convenient for you.

Es important Please note that any changes made will be applied to all virtual machines configured in VirtualBox, so it is advisable to choose a key that does not conflict with other functions on your keyboard.

Most used keyboard shortcuts in VirtualBox

VirtualBox includes a number of key combinations that allow you to perform tasks more easily. ManagementHere are some of the most notable shortcuts:

  • Ctrl + N: Create a new virtual machine.
  • Ctrl + S: Opens the configuration window for a virtual machine.
  • Host key + F: Turns full screen mode on or off.
  • Host key + L: Switch to fluid display mode.
  • Host key + G: Disables auto-adjustment of guest screen size.
  • Ctrl + R: Restarts a virtual machine.
  • CTRL+Q: Close the VirtualBox application.
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Advantages and possible disadvantages of the host key

Using this key offers multiple advantages, such as posibilidad to copy and paste text, transfer files between the host system and the virtual machine, and make graphical adjustments within the virtual environment. In addition, it allows you to run commands and combinations quickly without having to leave the virtual machine.

However, there are also some points to consider. For example, misusing this key can accidentally disconnect the virtual machine, which could cause data loss if progress has not been saved. Also, be careful with security settings, as an improper connection between the host and the virtual machine could expose sensitive content.

With these tips and Tricks in mind, you surely now have a better idea of ​​how to get the most out of VirtualBox. From basic tasks to more advanced configurations, the host key It is an indispensable tool for any user who wants to get the most out of their experience with virtual machines.

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