Installing Oracle VirtualBox on Arch is easy, but you need to know a couple of things before.

Installation

  1. First, install virtualbox with pacman (you will need superuser privileges). 
    pacman -S virtualbox
    • It will ask you which VirtualBox kernel modules you want to install: if your device has the default kernel (linux), select virtualbox-host-modules-arch. For any other kernel (linux-lts, linux-zen, linux-hardened, etc.), select virtualbox-host-dkms.
  2. Restart your computer.

VirtualBox Guest Additions

  1. Install virtualbox-guest-iso on your Arch machine.
  2. In your running VirtualBox VM window, press on Devices -> Optical Drives -> Choose a disk file. Go to /usr/lib/virtualbox/additions/ and select VBoxGuestAdditions.iso.
  3. Inside the VM, open your mounted CD-ROM device, open a terminal in that folder (if it is a Linux VM) and type (as root): bash ./VBoxLinuxAdditions.run.

Troubleshooting

Not loaded modules

If, when you go to start a new VM, VirtualBox shows an error about a not loaded module, check if you are using the latest kernel (check if there are updates for the linux package in pacman and update if needed).

VirtualBox downloads required kernel modules in a folder whose name is the latest kernel version (e.g.: /lib/modules/5.15.5-arch1-1/) and the kernel only looks for modules inside a folder with its current version (e.g.: /lib/modules/5.15.2-arch1-1/). Therefore, if you are not using the latest kernel, your current kernel will not load the modules.

More

Check Arch Wiki for more info about the installation and VirtualBox usage.

VirtualBox window

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