How to add VBoxLinuxAdditions.run in Debian Based Linux Distros

This Installation helps us auto configure the display size and other utilities when we setup a Linux distro inside the Virtual Box.

To install VirtualBox Guest Additions on your Ubuntu or any Debian Linux Distro inside a Virtual machine, follow these steps.

These additions will enable features like auto-resizing the VM window, shared folders, and better graphics support.

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1. Mount the Guest Additions ISO

1. Start your Ubuntu VM.

2. In the VirtualBox menu, go to:

   • Devices → Insert Guest Additions CD image...

3. If prompted, allow VirtualBox to download the Guest Additions ISO.

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2. Update Your Ubuntu System

Before proceeding, update your system to ensure you have the latest packages:

sudo apt update && sudo apt upgrade -y

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3. Install Required Dependencies

The Guest Additions require some tools to be installed first. Install them using the following command:

sudo apt install build-essential dkms linux-headers-$(uname -r)

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4. Mount the CD-ROM

If the Guest Additions CD doesn't auto-mount, you can manually mount it:

sudo mkdir /media/cdrom
sudo mount /dev/cdrom /media/cdrom

Check the contents of the CD to confirm the mount worked:

ls /media/cdrom

When you'll mount the CD and will try to read it something like ( This is Read-Only ) will pop-up which is completely fine (so don't panic, everything is okay).

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5. Run the Installer

Run the Guest Additions installer from the mounted ISO:

sudo /media/cdrom/VBoxLinuxAdditions.run

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6. Reboot the Virtual Machine

After installation completes, reboot the VM:

sudo reboot

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7. Verify Auto-Resize

After rebooting:

• Resize the VirtualBox window, and Ubuntu should automatically adjust its resolution.

• If it doesn’t work, ensure Auto-resize Guest Display is enabled:

  • Go to View → Auto-resize Guest Display in VirtualBox.

  

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Troubleshooting

If the installation fails or auto-resizing doesn’t work:

• Check the installation log for errors:

  cat /var/log/vboxadd-setup.log

• Ensure the Guest Additions kernel modules are loaded:

  sudo modprobe vboxsf

This should be resolving any issues you guys were facing. Have a nice day. V3nom Signing Off!!