Ubuntu 20.04
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VirtualBox : Create Virtual Machines2020/08/05

Create a Virtual Machine.
On this example, create a VM to install Ubuntu 20.04.
[1] Create a Virtual Machine.
# create a directory for VM

mkdir /var/vbox
# create a VM

VBoxManage createvm \
--name Ubuntu_2004 \
--ostype Ubuntu_64 \
--register \
--basefolder /var/vbox

Virtual machine 'Ubuntu_2004' is created and registered.
UUID: db472f90-be34-4b2b-b4bf-a09b8d9a18d5
Settings file: '/var/vbox/Ubuntu_2004/Ubuntu_2004.vbox'
# modify settings for VM

# replace interface name [ens33] to your own environment

VBoxManage modifyvm Ubuntu_2004 \
--cpus 4 \
--memory 4096 \
--nic1 bridged \
--bridgeadapter1 ens33 \
--boot1 dvd \
--vrde on \
--vrdeport 5001
# configure storage for VM

VBoxManage storagectl Ubuntu_2004 --name "Ubuntu_2004_SATA" --add sata

VBoxManage createhd \
--filename /var/vbox/Ubuntu_2004/Ubuntu_2004.vdi \
--size 20480 \
--format VDI \
--variant Standard

Medium created. UUID: 1ffcb55f-22d3-46af-8f39-22b8c04b50b2
VBoxManage storageattach Ubuntu_2004 \
--storagectl Ubuntu_2004_SATA \
--port 1 \
--type hdd \
--medium /var/vbox/Ubuntu_2004/Ubuntu_2004.vdi
# configure DVD drive for VM

# example below, it specifies an ISO file for installation

VBoxManage storageattach Ubuntu_2004 \
--storagectl Ubuntu_2004_SATA \
--port 0 \
--type dvddrive \
--medium /home/ubuntu-20.04-live-server-amd64.iso
# confirm settings for VM

VBoxManage showvminfo Ubuntu_2004

Name:                        Ubuntu_2004
Groups:                      /
Guest OS:                    Ubuntu (64-bit)
UUID:                        db472f90-be34-4b2b-b4bf-a09b8d9a18d5
Config file:                 /var/vbox/Ubuntu_2004/Ubuntu_2004.vbox
Snapshot folder:             /var/vbox/Ubuntu_2004/Snapshots
Log folder:                  /var/vbox/Ubuntu_2004/Logs
Hardware UUID:               db472f90-be34-4b2b-b4bf-a09b8d9a18d5
Memory size                  4096MB
Page Fusion:                 disabled
VRAM size:                   8MB
CPU exec cap:                100%
HPET:                        disabled
CPUProfile:                  host
Chipset:                     piix3
Firmware:                    BIOS
Number of CPUs:              4
PAE:                         enabled
Long Mode:                   enabled
Triple Fault Reset:          disabled
APIC:                        enabled
X2APIC:                      enabled
Nested VT-x/AMD-V:           disabled
CPUID Portability Level:     0

# * if dettach DVD, run like follows

VBoxManage storageattach Ubuntu_2004 --storagectl Ubuntu_2004_SATA --port 0 --device 0 --medium none

[2] Start a Virtual Machine.
VBoxManage startvm Ubuntu_2004 --type headless

Waiting for VM "Ubuntu_2004" to power on...
VM "Ubuntu_2004" has been successfully started.
[3] On enabling VRDP environment by installing VirtualBox extension pack, it's possible to connect to VM with RDP. The example below is on Windows 10.
Run Remote Desktop Client and specify [(VirtualBox Server's Hostname or IP address):(vrdeport set for the VM)] to connect to VM.
[4] After connected successfully, VM console is shown.
[5] Installation finished and Virtual Machine is running normally.
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