Problem installing virtualbox

Think you'll need to install linux54-virtualbox-host-modules.

Then sudo vboxreload

(you can check your installed kernel(s) with mhwd-kernel -li if you're not sure what version is installed)


Ok. Now when i install extension pack have this error:

Failed to load the main module ('/usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/'): VERR_FILE_NOT_FOUND - /usr/lib/virtualbox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/linux.amd64/ undefined symbol: RTVfsFileQuerySize.

The package is "Oracle VM Virtualbox Extension Pack 6.1.0r135406.


You don't have kernel headers installed, if the message knows what's talking about :wink:

Can you post a link?

Ok. I have install

sudo pacman -S linux-headers

i have the same error.

This is the link:

As I said in my first post, I am new to linux (I have always worked on windows) and it is not easy to understand the errors ....

Thank you

OK, I will try to be gentle :rofl:

Run in terminal this and post output, using ``` before and after.

pacman -Qqs linux54
pacman -Qqs virtualbox
[kar@Zenbook ~]$ pacman -Qqs linux54
[kar@Zenbook ~]$ pacman -Qqs virtualbox

Thank's :bowing_man::bowing_man::bowing_man::grinning:

How do you install it?
Also post this

pacman -Qs virtualbox
[kar@Zenbook ~]$ pacman -Qs virtualbox
local/linux54-virtualbox-host-modules 6.0.14-4 (linux54-extramodules)
    Host kernel modules for VirtualBox
local/virtualbox 6.0.14-4
    Powerful x86 virtualization for enterprise as well as home use
local/virtualbox-host-dkms 6.0.14-4
    VirtualBox Host kernel modules sources

I try install extensions so:

It is not the proper way to install Extensions pack.
It seems (I didn't expect or know that) VB is not checking properly to download the appropriate package version.

Let me explain.
The package versions of all VB related packages must match (be the same base version 6.0, 6.1 etc)
The preferred method to install extensions pack is from AUR (virtualbox-ext-oracle), which is currently a higher version (6.1) from your VB (6.0).
You may download the 6.0 version manually from VB website and install manually. :point_down:
Or wait for the new VB 6.1 to land in stable branch.

Download this (for your version) and copy here


Perfect. I downloaded from the VB website and installed


and gave me no mistakes.

Tomorrow, (now for me it's 1:00 in the mornig) one I try to create a virtual machine with Win



I installed win on the VB (all ok).
But the VB does not see the shared folders, it does not send the virtual machine to full screen.

It appears that Guest Additions are not installed.

How can I recover? Thank you

Host modules

This is not needed - I don't know why you complicate it.

List your installed kernel(s)

❯ mhwd-kernel -li
Currently running: 5.4.6-2-MANJARO (linux54)
The following kernels are installed in your system:
   * linux54

On Manjaro host

Then install the matching host-modules

sudo pacman -Syu linux54-virtualbox-host-modules

That's it

I don't know which forum wiki you have followed

Virtual machine resolution resize

Manjaro guest

  • Section 3 and 6

Other Linux guest

  • Section 7 and 9

Troubleshooting screen issues

  • Section 10

Shared folders

  • Section 8 and 9
1 Like

Hello, i've this error:

error: the following package was not found: linux54-virtualbox-hostmodules

typo - missed a dash


Even so it is not found ..

error: the following package was not found: linux-54-virtualbox-host-modules

another typo - the typo missed a - the next had a dash too many

OK. Done.

But on the win virtual machine I always have the same problem: I don't see shared folders.

Do I have to do anything else?

Thank you

Ok. I solved it by downloading the ISO version 6.0.14 (as recommended) which I replaced at 5.0 which was in the / usr / lib / virtualbox / additions / folder
Afterwards I launched the VB machine and from there I installed and everything went ok.
The error was certainly due to the different version between VB and the Guest.


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