Debian 10 Buster
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VirtualBox : Install GuestAdditions2019/07/25

Install GuestAdditions into a Virtual Machine to improve Virtual Machine's System Performance.
The example below is to install GuestAdditions on a Virtual Machine [Debian_10].
[1] Attach GuestAdditions' disk to the VM on VirtualBox Host.
The target VM must be stopped.
VBoxManage storageattach Debian_10 \
--storagectl Debian_10_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 package first

LINUX_HEADERS=$(uname -r)

apt -y install gcc make bzip2 linux-headers-$LINUX_HEADERS

mount /dev/cdrom /mnt

cd /mnt


Verifying archive integrity... All good.
Uncompressing VirtualBox 6.0.10 Guest Additions for Linux........
VirtualBox Guest Additions installer
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel
modules.  This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: or
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Building the modules for kernel 4.19.0-5-amd64.
update-initramfs: Generating /boot/initrd.img-4.19.0-5-amd64
VirtualBox Guest Additions: Running kernel modules will not be replaced until
the system is restarted

After installing GuestAdditions, System Performance will be improved.

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