I'm using a Debian 10 guest in a Linux Mint host, and having trouble with the resizing of the screen (it doesn't resize at all).
The bidirectional clipboard is working, so parts of the guest additions are working. But I have no idea why the guest additions isn't fully working. The process below are the commands I've used on both Deb 8 and Deb 9 instances, and they work perfectly. Please help me to identify why this isn't working for me.
apt-get install build-essential module-assistant m-a prepare mount /media/cdrom sh /media/cdrom/VBoxLinuxAdditions.run