VirtualBox : Install GuestAdditions

	Install [GuestAdditions] into a Virtual Machine to improve Virtual Machine's System Performance. On the example below, it shows to install [GuestAdditions] on a Virtual Machine [Debian_13].
[1]	Attach [GuestAdditions]' disk to the VM on VirtualBox Host. The target VM must be stopped.

root@dlp:~#  VBoxManage storageattach Debian_13 \ --storagectl Debian_13_SATA \ --port 0 \ --type dvddrive \ --medium /usr/share/virtualbox/VBoxGuestAdditions.iso

[2]	Start the VM and login to it, then Install [GuestAdditions] on it.

# install required packages first root@guest:~#  apt -y install gcc make bzip2 linux-headers-$(uname -r) root@guest:~#  mount /dev/cdrom /mnt root@guest:~#  cd /mnt root@guest:/mnt#  ./VBoxLinuxAdditions.run Verifying archive integrity... 100% MD5 checksums are OK. All good. Uncompressing VirtualBox 7.2.2 Guest Additions for Linux 100% VirtualBox Guest Additions installer VirtualBox Guest Additions: Starting. VirtualBox Guest Additions: Setting up modules VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules. This may take a while. ..... ..... root@guest:/mnt#  reboot

After installing [GuestAdditions], System Performance will be improved.