VirtualBox: Installing Guest Additions

Installing just VirtualBox, sometimes, does not resolves some of the problems. For example, seamless movement between host OS and guest will not work without installing Guest Additions.USB devices may not work without installing GuestAdditions. GuestAdditions are installed in the Guest OS where as VirtualBox is installed on the host.

This blog is about how to install Guest Additions after a virtual machine is created

  1. Launch VirtuaBox
  2. Start Virtual Machine by clicking on "Start"
  3. Wait for guest os to start. If guest OS is Windows, wait for some more time for it to run "Startup Applications"
  4. Click on  "Devices" and then select "Install Guest Additions"
  5. Step 4 will launch installation Wizard for installing GuestAdditions. Click on "Next" to start installing Guest Additions
  6. Accept the License Terms and click "Next" to continue
  7. Choose a location for installation. Default location is fine too. Click on "Next" to continue with installation.
  8. Once installation is complete, it may ask for guest os to be rebooted. Selected an option and click "Finish"

This will enable smooth switching between host and guest windows.


The guest addition of the Devices could not work and start at all.
What would be the cause of the error?

Posted by Yoshinobu Hirayama on March 28, 2009 at 02:05 AM PDT #

I've already checked this site, though. I've downloaded its japanese version.
Would it be considerable for you not to open the winzard of guest addition?

Posted by Yoshinobu Hirayama on March 28, 2009 at 12:17 PM PDT #

I agree with our mate Yoshinobu Hirayama down there...
I try to click on "Install guest additions" but nothing happens >.<
Oh woe is me. What to do...OH what to do =(

Posted by =(((((((((( on April 18, 2009 at 12:07 AM PDT #

I had the issue with it not doing anything when I clicked 'Install Guest Additions' also. I'm guessing you already have a CD mounted. Unmount the CD (in the virtual machine). Apparently guest additions feels like it should run like a CD and if one is already mounted it just quits. Worked for me to unmount what I had and click the 'Install Guest Additions' again.

Posted by Fantasy sports player on April 19, 2009 at 12:14 PM PDT #

Hey thanks for the reply. The way I fixed was open the Icon on the desktop and clicked 'Open to install' or something like that.
I don't use the CD anymore either, I installed it to VB \^_\^

Posted by =(((((((((( on April 19, 2009 at 04:46 PM PDT #

Thanks for your advice. I've learnt the way of mounting the Guest Addition from a certain magazine.
However, I have a question for you as follows:
Name: Ubuntu
OS type: Windows Vista home edition
Base memory:1041MB
Video momory: 12MB
Boot Order:Floppy, CD/DVD-ROM,HD
IO APIC:Enable
Hard Disks
IDE Primary Master
ubuntu.vdi 20GB
I ask you whether the seamless movement between host OS and guest will work without any switching function on the display or not.

Posted by Yoshinobu on April 19, 2009 at 05:39 PM PDT #


Host: Vista Homme Premium
OS Type:
Base Memory:
384 MB
Video Memory:
12 MB
Boot Order:
Floppy, CD/DVD-ROM, Hard Disk
Nested Paging:
3D Acceleration:

You mean pressing the host key to free your mouse out of the VB?
I had that problem but after I installed all of the updates, I didn't have it anymore (along with fullscreen)
That was my specs but I don't know anything about it. Maybe make yours the same as mine and you'll be alright \^_\^
One more thing, I am sure I read somewhere that it is the Guest OS which must support that function. So check with your Guest?
Good luck.

Posted by =(((((((((( on April 19, 2009 at 05:54 PM PDT #

I could mount the Guest Addition on the VB while the Ubuntu was operating as follows:
1. Click on "Devices" and then select "Install Guest Additions"
2. When you can see ISO image file and the message for opening it automatically, you have to cancel it.
3. Click on Application - Accessary - Terminal at Ubuntu. And you try to add the following commands
Pressing on Enter key, and
starting the installation, and after you reconginzed the word of "Successful", you rebooted the VB. After that, you can change the size of display monitor to the full screen size from the System of Ubuntu. Additionally, I've found that the switching of the mouse between host and guest window still didn't work at the version 8.10 of Ubuntu.

Posted by Yoshinobu on April 19, 2009 at 07:12 PM PDT #

I'm not sure what you are talking about mate. Do you have an Icon on your Ubuntu desktop? a new one? Have you downloaded and installed all available updates for Ubuntu? Have you installed Ubuntu to VB? I'm just asking these questions because this is how I managed to get mine working. I am not an expert at this. This is my first time, a Virtualbox and Ubuntu virgin so to speak \^_\^

Posted by =(((((((((( on April 19, 2009 at 08:09 PM PDT #

The VB for operating Ubuntu works on my PC. However, I still need to learn more about Ubuntu. If you try to solve yourself for some problems on Ubuntu, you have to spend much time to settle them.

Posted by Yoshinobu on April 19, 2009 at 11:12 PM PDT #

Yeah, I just found out you can't use any Compiz effects in VB or any special 3D effects for that matter...
So I might install Ubuntu straight to my HDD

Posted by =(((((((((( on April 19, 2009 at 11:48 PM PDT #

Hi Guys...

I had the same issue, I just started the VM and went to the CD Drive device and install it manually you only have to be sure if you OS is on 32bit or 64bit...

This works for me!!!


Posted by JP on June 04, 2009 at 04:43 AM PDT #

Recently installed the guest additions of sun virtual box,it made my touch-pad uninstall so it stopped working, i them used numlock to move the pointer and installed the mouse or something like that but when i restarted the computer due to the numlock still on my keyboard stopped working and hence i couldn't even log in!(no the numlock doesn't unlock).The only way is to reboot my computer but that i have a lot of important stuff at stake.Is there any way i could control my computer perhaps from remote desktop or another usb mouse or LAN.I have a dell vostro 1015 with xp

Posted by mona on September 24, 2010 at 02:31 AM PDT #

Installed VB on my windows 7, but the "devices" menu is absent on the task bar.
What could be wrong with my installation? Is there another version that has this?

Uju N.

Posted by Uju N on February 04, 2011 at 05:34 AM PST #

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