Ubuntu 18.04
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VirtualBox : Install GuestAdditions2018/12/07

 
Install GuestAdditions into a Virtual Machine to improve Virtual Machine's System Performance.
The example below is to install GuestAdditions on a Virtual Machine [Ubuntu_1804].
[1] Attach GuestAdditions' disk to the VM on VirtualBox Host.
root@dlp:~#
VBoxManage storageattach Ubuntu_1804 \
--storagectl Ubuntu_1804_SATA \
--port 0 \
--type dvddrive \
--medium /usr/share/virtualbox/VBoxGuestAdditions.iso
[2] Install GuestAdditions on the VM.
# install required package first

root@guest:~#
LINUX_HEADERS=$(uname -r)

root@guest:~#
apt -y install gcc make bzip2 linux-headers-$LINUX_HEADERS

root@guest:~#
mount /dev/cdrom /mnt

root@guest:~#
cd /mnt

root@guest:/mnt#
./VBoxLinuxAdditions.run

Verifying archive integrity... All good.
Uncompressing VirtualBox 5.2.22 Guest Additions for Linux........
VirtualBox Guest Additions installer
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules.  This may take a while.
update-initramfs: Generating /boot/initrd.img-4.15.0-20-generic
VirtualBox Guest Additions: Running kernel modules will not be replaced until the system is restarted
VirtualBox Guest Additions: Starting.

root@guest:/mnt#
 
After installing GuestAdditions, System Performance is improved.

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