![virtualbox ctrl alt delete virtualbox ctrl alt delete](https://i.ytimg.com/vi/AjyMzdXuq4M/maxresdefault.jpg)
I don’t know how I missed this, but apparently VirtualBox finally supports a “Scale Mode.” Guest Additions for supported OS’s install extra drivers for the virtual machine, so that when you put VirtualBox into “Full Screen” mode, the guest OS will automatically increase its screen resolution to fit your display. host + f, to switch back normal size, if need,.host + c, to switch to/out of scaled mode,.host + f, to switch to full screen mode, if not yet,.The AutoPlay window opens on the guest OS and click on the Run VBox Windows Additions executable. Launch the guest OS in VirtualBox and click on Devices and Install Guest Additions.
![virtualbox ctrl alt delete virtualbox ctrl alt delete](https://www.itzgeek.com/wp-content/uploads/2019/10/Disable-Ctrl-Alt-Del-on-CentOS-8.jpg)
Guest Additions installs on the guest system and includes device drivers and system applications that optimize performance of the machine. By default, this is the right Ctrl key on your keyboard. To return ownership of keyboard and mouse to your host OS, Oracle VM VirtualBox reserves a special key on your keyboard: the Host key.
![virtualbox ctrl alt delete virtualbox ctrl alt delete](https://i0.wp.com/techdirectarchive.com/wp-content/uploads/2020/03/screenshot-2020-03-18-at-22.06.40.png)
On a Mac laptop keyboard, press Fn+Ctrl+Option+Delete.On a full-sized Mac keyboard, press Fwd Del+Ctrl+Option.If you are using an external PC keyboard, press Ctrl+Alt+Del.Select Virtual Machine > Send Ctrl-Alt-Del.