![]() After finishing the installation, reboot the VM. The process of installing Guest Additions is quite straightforward. In the guest Windows system open Windows Explorer, go to the virtual CD drive (disk D: in this case) and run VBoxWindowsAdditions-amd64.exe file to install VirtualBox Guest Additions on the Windows 10 guest. In the VM window, go to Devices > Insert Guest Additions CD image to insert the ISO disk into the virtual CD drive of the VM. ![]() In order to fix this issue and make VirtualBox full screen, you should install VirtualBox Guest Additions on the guest OS. If you try to enter the full screen mode by clicking View > Full screen mode in the VM window or by pressing the combination of the VirtualBox host key and F ( Right Ctrl + F in this case), the guest OS screen will not be stretched to the size of your display and resolution will not be increased. For example, in our case the resolution of the monitor is 1920×1080 and the maximum resolution in the Windows 10 guest settings is 1600×1200 (available resolution settings of the guest OS are not for widescreen displays, as you can see). If you go to Windows 10 display settings (right click the desktop and select Display settings in the context menu), you can increase the guest OS resolution, but you still have no ability to switch the full screen mode on. You can also enable 2D and 3D acceleration. It is recommended that you set 128 MB of video memory, as when a video mode with higher resolution is used, more video memory is needed. If you try to maximize the VirtualBox VM window right after installing Windows 10 on a VirtualBox VM, the size of the guest OS user interface is not increased (see the screenshot below).Ĭheck the amount of video memory you have in the virtual machine settings. ![]() As you recall, VirtualBox is installed on the host OS running on a host machine (a physical machine) and the guest OS is the operating system running on a VM. You can disable the internet connection or set up a virtual network adapter for a VM in the Host Only mode to allow network communication only between host and guest systems, and deny connecting the Windows 10 guest to external networks, including the internet. If security is a concern for you, running Windows 10 as a virtual machine (VM) on VirtualBox is a good idea. ![]() If there is anything I have missed, or if there is a better way to do something then please let me know.DISCOVER SOLUTION How to Make VirtualBox Full Screen for Windows 10 Guests Parrot seems to do some strange things with network adapter names that make doing wireless hacking stuff a real pain. I run like a dream without the need for EasyRes, has all the same tools as Kali and looks stunning. Off the back of this issue, I also explored some other all-purpose infosec distros and found Parrot OS. I am sure you could push it a little further but I did not need to, this worked fine. With EasyRes installed I was able to play around with various screen resolutions and densities to find the sweet spot and found that 1440 x 900 at standard resolution (1x) seems to work great. There were several options but EasyRes seemed to fit the bill and was free. So, now I knew it was an issue with the pixel density of my display, I needed to find a program that could change it. It boiled down to it being run on a retina display.Īfter a bit of digging, I found this thread which seemed to be describing a similar situation to mine. But if I ran it on my second display, a non-retina AOC 27in screen it ran fine. I have always run Kali in a virtual machine (VM) in Virtualbox and I had never had any issues.īut when I installed it on my new (to me) 2019 MacBook Pro, there was so much lag that it was pretty much unusable. Kali Linux is a Debian-based Linux distribution aimed at advanced Penetration Testing and Security Auditing. Most of the time I will use a distro like Kali as it is quick to set up and has all the tools that I am likely to need. In my free time, I like to learn about hacking and often spend my time completing CTFs. This weeks post is more of a tip than an article but it is something I recently came across and thought it might help others.
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