VirtualBox

This article contains tips and tricks regarding Oracle VirtualBox.

Installation

Installing from Oracle's repository on Debian/Ubuntu

echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -cs) contrib" > /etc/apt/sources.list.d/virtualbox.list
wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
apt update
apt install virtualbox-6.1 dkms

• Credits 1
• Credits 2
• Download script from GitLab

Configuration

Convert VMware disk format to VirtualBox disk format

Convert virtual hard disks:

VBoxManage clonehd --format vdi Root_Disk.vmdk Root_Disk.vdi

Credits

How to: http://wiki.flexion.org/VirtualBox.html

Convert partition image to VirtualBox disk format

Get "rawimage.img" using dd or some similar program.

VBoxManage convertfromraw rawimage.img virtualboximage.vdi --format vdi --variant Standard,Fixed

Set custom resolution

Example:

VBoxManage setextradata "Win10Vtm" CustomVideoMode1 1680x1050x32

Troubleshooting

Failed to load unit 'vga'

• Error: Failed to load unit 'vga' (VERR_SSM_LOADED_TOO_MUCH).
• Reason: There's not enough graphics RAM in the virtual machine.
• Solution: Increase the amount of graphics RAM for the virtual machine (see screenshot below). 64 MiB is a good value. The message "Invalid settings detected" as shown in the screenshot will disappear after the setting was adjusted.

VirtualBox VMs display settings