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--- deb11:virtualboxvm [2022/09/24 11:40] – Bernard Condrau
+++ deb11:virtualboxvm [2025/06/06 12:23] (current) – [Settings] Bernard Condrau
@@ Line 4: / Line 4: @@
   * After installing the Guest Additions, close VirtualBox and restart it under your user account
-===== Install Guest Additions on a Debian 11 host =====
+===== Install Guest Additions on a Debian 11 guest operating system =====
-  * The following steps need to be taken inside the VM
+  - The following steps need to be taken inside the VM after the operating system has been installed
-  * Add the following line to /etc/apt/sources.list.d:<code>deb http://ftp.debian.org/debian stretch-backports main contrib</code>
+  - Install the kernel headers, DKMS framework, and build tools<code>$ sudo apt update -y && sudo apt upgrade
-  * Install virtualbox-guest-dkms, kernel headers, and, optionally, virtualbox-guest-x11 (for the graphical guest utilities):<code>sudo apt update
+sudo apt install dkms linux-headers-$(uname -r) build-essential</code>
-sudo apt install virtualbox-guest-dkms virtualbox-guest-x11 linux-headers-$(uname -r)</code>
+  - Attach the guest addition ISO to the VM and mount it<code>$ sudo mount /dev/cdrom /mnt/cd</code>
-  * Reboot the guest system.
+  - Install the VirtualBox guest additions<code>sudo sh /mnt/cd/VBoxLinuxAdditions.run</code>
-  * More info: [[https://unix.stackexchange.com/questions/286934/how-to-install-virtualbox-guest-additions-in-a-debian-virtual-machine|How to install VirtualBox Guest Additions in a Debian virtual machine]]
+  - Restart your virtual machine in order to reload the kernel modules<code>systemctl reboot -i</code>
+  - If you want the VM to automatically switch to full screen upon boot or login, toggle the **View option --> Auto-resize Guest Display**
+  - Uninstall the guest additions<code>sudo sh /mnt/VBoxLinuxAdditions.run uninstall</code>
+  - Repeat steps 3-6 if the kernel or the VirtualBox version changes
+  * [[https://kifarunix.com/install-virtualbox-guest-additions-on-debian-11/|Install VirtualBox Guest Additions on Debian 11]]
+===== Reboot (dead) vm =====
+  - ''vboxmanage list runningvms''
+  - ''vboxmanage controlvm <machine> acpipowerbutton''
+  - ''vboxmanage startvm <machine> --type=headless''
+==== Settings ====
+  * ''vboxmanage modifyvm <machine> --defaultfrontend headless''
+  * ''vboxmanage controlvm <machine> poweroff'' if the vm cannot be shut down gracefully

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