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:

   apt-get update
   

3. Install the latest security updates:

   apt-get upgrade
   

4. Install required packages:

   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.