Installing Guest Additions on Debian

Follow these steps to install the Guest Additions on your Debian virtual machine:

  1. Login as root;
  2. Update your APT database with apt-get update;
  3. Install the latest security updates with apt-get upgrade;
  4. Install required packages with apt-get install build-essential module-assistant;
  5. Configure your system for building kernel modules by running m-a prepare;
  6. Click on Install Guest Additions… from the Devices menu, then run mount /media/cdrom.
  7. Run sh /media/cdrom/VBoxLinuxAdditions.run, and follow the instructions on screen.