Install Virtualbox Guest Additions di Ubuntu

Step by step :

1. Open virtualbox GUI
2. Start ubuntu guest
3. Login pada ubuntu guest sebagai sudo users
   $sudo apt update
   $sudo apt install build-essential dkms linux-headers-$(uname -r)
4. Pilih Devices -> “Insert Guest Additions CD Image”
   
5. Buka ubuntu guest terminal dan buat direktory mount point iso
   $sudo mkdir -p /mnt/cdrom
   $sudo mount /dev/cdrom /mnt/cdrom
6. Navigate ke direktory dan jalankan VBoxLinuxAdditions.run
   $cd /mnt/cdrom
   $sudo sh ./VBoxLinuxAdditions.run –nox11Output:
   Verifying archive integrity… All good.
   Uncompressing VirtualBox 5.2.32 Guest Additions for Linux……..
   …
   VirtualBox Guest Additions: Starting.
7. Reboot ubuntu guest
   $sudo shutdown -r now
8. Check vbox guest
   $lsmod | grep vboxguestOutput : 
   vboxguest                303104 2 vboxsf