Full Screen Virtual Box?

[limotux]

Hi,
Just playing around I installed successfully I think VirtualBox and I downloaded Windoze 11 from M$ website and installed it.

Trying to get the Winoze VM in full screen it seems to be ignoring the real size of my screen.
I get something like the pic (not full width). I know the pic is not full screen but this is almost the same after I press CTL+F and get full screen.

I modified in the VBOX Screen dimensions to be as I got from

[limo@asus ~]$ xdpyinfo | grep 'dimensions:'
  dimensions:    1366x768 pixels (361x203 millimeters)
[limo@asus ~]$ 

I had an error installing

==> Making package: virtualbox-ext-oracle 7.0.6-1 (Sun Jan 29 17:01:46 2023)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found Oracle_VM_VirtualBox_Extension_Pack-7.0.6.vbox-extpack
==> Validating source files with sha256sums...
    Oracle_VM_VirtualBox_Extension_Pack-7.0.6.vbox-extpack ... FAILED
==> ERROR: One or more files did not pass the validity check!
 -> error making: virtualbox-ext-oracle

Any advice on how to get true full screen is highly appreciated.
If possible to fix the second error.
Thank you.

[dalto]

Did you install the guest additions in Windows?

[limotux]

@dalto

Did you install the guest additions in Windows?

I did not install anything related to VBox in Windows VM.
Where can I get and install?
I followed instructions at https://discovery.endeavouros.com/applications/how-to-install-virtualbox/2021/03/
But as mentioned I had an error as mentioned above. Is it this?

[dalto]

@limotux

But as mentioned I had an error as mentioned above.

You shouldn’t need the extension pack.

@limotux

I did not install anything related to VBox in Windows VM.

Well you probably don’t have the drivers.

@limotux

Where can I get and install?

Install the package virtualbox-guest-iso in Linux. That will give you the ISO. Then you can load the ISO into the VM and install the additions from it.

[limotux]

@dalto

Install the package virtualbox-guest-iso in Linux

[limo@asus ~]$ yay virtualbox-guest-iso
2 aur/virtualbox-guest-iso-dev 7.0.7.155247-1 (+0 0.00) 
    The official VirtualBox Guest Additions ISO image for virtualbox dev version
1 community/virtualbox-guest-iso 7.0.6-1 (36.5 MiB 50.6 MiB) (Installed)
    The official VirtualBox Guest Additions ISO image
==> Packages to install (eg: 1 2 3, 1-3 or ^4)
==> 1
[sudo] password for limo: 

I do not understand this

1 community/virtualbox-guest-iso 7.0.6-1 (36.5 MiB 50.6 MiB) (Installed)

How is it “installed”? How it gets installed after doing the yay virtualbox-guest-iso
But done now!
UPDATE:
Rebooted the windows VM, still not full screen.

[dalto]

@limotux

How is it “installed”?

The package installs a file, namely: /usr/lib/virtualbox/additions/VBoxGuestAdditions.iso

@limotux

Rebooted the windows VM, still not full screen.

That is because you skipped this step:

@dalto

Then you can load the ISO into the VM and install the additions from it.

So now that you have the ISO, load it into the virtual drive of the VM. Then you can install the guest additions inside the VM.

[limotux]

@dalto

Then you can load the ISO into the VM and install the additions from it.

@dalto

load it into the virtual drive of the VM. Then you can install the guest additions inside the VM.

I could only do as shown in pic!
Sorry, it seems I am a long way backward!
How and what to do going from here.
Last time I used VBox was like more than 10 years ago.
Sorry!

[dalto]

Once it is loaded in the VM you should be able to see it in Windows explorer in the VM.

[limotux]

@dalto

Once it is loaded in the VM you should be able to see it in Windows explorer in the VM.

Done and perfectly running as intended.
Thank you very much @dalto
As usual @dalto for the rescue.
Thanks a lot.