VirtualBox is a free, open source virtualization program from Oracle for the x86/x86_64 architectures.

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How to share a VirtualBox image?

How would I share a VirtualBox image? I am a developer and I want to be able to allow other developers to develop on their machines from the same image. Is there an easy way of doing this? Every ...
18
votes
5answers
34k views

How can I get VirtualBox to play nicely with dual monitors?

I use VirtualBox to run a Ubuntu x64 guest under a Vista x64 host with a 19" and 15" monitor. I enable seamless mode in VirtualBox, but the windows don't actually move anywhere other than the ...
18
votes
2answers
673 views

What does selecting an OS in VirtualBox actually do?

In the setup process for a new virtual machine, VirtualBox presents several different OS types and versions to choose from: I'm curious as to what VirtualBox actually does when you select an ...
18
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1answer
22k views

VirtualBox: using physical partition as virtual drive

Background: I am using VirtualBox installed on Windows 7. From within VirtualBox I am using Xubuntu as a virtual OS. The reason I chose this approach is so that I don't have to keep turning off ...
18
votes
2answers
8k views

Virtualbox: getting host to capture certain key presses

I'm using VirtualBox on Ubuntu 9.10 with Windows XP as the guest OS. It's pretty annoying that when I in guest OS - I can't switch virtual desktops(workspaces) on the host(Ubuntu) by pressing ...
18
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4answers
23k views

Mount VirtualBox VDI disk

I have a virtual Windows 7 computer using VirtualBox on a Linux host. How can I mount this virtual pc's harddisk (VDI file) in Linux? It's a dynamic file, meaning that it only takes up as much space ...
17
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7answers
2k views

What's better a better VM app: VMWare, Parallels or Virtual PC [closed]

From a Windows developer's perspective, which VM application is the best? Why?
17
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4answers
715 views

How does virtualizing differ from emulation, in terms of structure?

Someone told me that a virtualizing program like VirtualBox does not work like an emulator does in the sense that it doesn't emulate registers and uses the actual ones for the virtualized data that ...
17
votes
1answer
12k views

Copy vagrant box locally

I have a vagrant box running on VirtualBox, and I need to make a copy (with all its existing config and data), so that I can make changes on it without affecting the original. The problem is that my ...
17
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2answers
9k views

Intel VT-x disappeared after upgrading to Windows 8

I've upgraded to Windows 8 some weeks ago (MSDNAA!) and today, while I was trying to run a VM, I've noticed that VT-x is disabled. Now, Hyper-V works without problems, as I've tried emulating Win7 ...
17
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3answers
21k views

Is it possible to assign more video memory in VirtualBox?

I am currently using VirtualBox to run a Fedora 15 VM. While changing my settings, I allocated 128MB of video memory, as well as enabling 3D acceleration. Is there any way to assign more video ...
16
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4answers
25k views

How to change fixed size VDI with modifyhd command in Windows?

I'm trying to figure out how to change the size of a VDI file. I'm new to VirtualBox, and I got a lot to learn. But I think I got the hang of the basics. I have already installed Windows 7 as my first ...
16
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7answers
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Limiting CPU speed in a virtual machine?

Does anyone know of a way to limit the CPU speed in a virtual machine? Or if there is even a virtualization software that allows you to do this? I am trying to find the minimum requirements for a ...
16
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3answers
10k views

Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?

I have downloaded and installed the newest virtualbox 4.3.20 for my Windows 7 (64-bit OS), but when I want to install 64-bit Linux, the New->Create Virtual Machine only displays 32-bit option, no ...
16
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3answers
43k views

Virtual Machine (VirtualBox) — How to access files from the hosting machine?

I have a PC with Windows 7 Ultimate (A) running on it. From within that OS I have VirtualBox running another Windows 7 instance (B). Is there any way for the Windows 7 (B) to access files from ...
15
votes
3answers
17k views

easy_install will not connect through proxy

I'm running Ubuntu Server 10.04 64-bit under VirtualBox, and it seems that everything except easy_install and pip can connect to the Internet. I have set and exported the http_proxy environment ...
15
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6answers
44k views

Virtual Box - not filling entire screen

I am new to VirtualBox and am trying to set up an instance of Windows 7 64. I have the virtual machine instance running with Windows 7 now installed, but it only fills up a small portion of my ...
15
votes
4answers
13k views

Quickest way to merge snapshots in VirtualBox?

I have vdi with quite a number of snapshots taken from it - say, 50 or 70 snapshots. I want to have one plain vdi with a current state. These snapshots take way too much disk space and are not needed ...
15
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5answers
20k views

SSH Basics on Vagrant VMs

I'm building a vagrant machine (Ubuntu 12.04) with the following requirements: SSH access via Vagrant to a user with sudo-privileges. I've generated public/private keys (via ssh-keygen) on the ...
14
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3answers
27k views

How to start Windows XP in Safe Mode when its a VirtualBox guest in a Mac OS X host?

I've tried tapping F8 as it boots up, but I just get the normal logon screen. I'm using a Mac Mini with an Apple keyboard, do I need to do something special to get it to recognise F8? I'm trying to ...
14
votes
4answers
12k views

Change VirtualBox DHCP to issue 192.168.x.x adresses instead of 10.0.x.x adresses?

I have a VirtualBox (v4.1.8) VM that is automatically assigned with an IP in the 10.0.x.x range via DHCP. Can I change it to use the 192.168.x.x range instead?
14
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6answers
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Ubuntu on VirtualBox can only show resolution of 800x600 - how do I change it?

My monitor is 1920 x 1200 and the computer is running Windows 7. Using VirtualBox and Ubuntu 10.04, the screen of the Ubuntu can only be 800 x 600 or 640 x 480. Is there a way to change that. I ...
14
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2answers
21k views

Use physical harddisk in Virtual Box

Using Virtual Box, how can I install an OS to a secondary, physical disk, and boot it in both (at separate times) Virtual Box, and as a typical secondary OS install?
14
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3answers
5k views

How do I set the Apache2 DocumentRoot to a “vboxsf” VirtualBox Shared Folder? (permissions issue?)

I setup Ubuntu 11.04 desktop 32 bit on a VirtualBox VM with a shared folder to the host. The shared folder is /media/sf_Dev/ I want to change Apache2 to point the DocumentRoot to that folder, so I ...
14
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6answers
42k views

How can I get VirtualBox to run at 1366x768?

I'm trying to run Windows 8 in VirtualBox. My laptop's display is exactly 1366x768. Windows 8 disables some of its features if the resolution is less than 1366x768, so I need to run the guest OS ...
14
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2answers
24k views

How do I delete a VM in VirtualBox when the hard drive the VDI file was on is deleted?

I'm using VirtualBox hosted on Windows 7 and the physical hard drive that one of my VM's VDI file was on got completely borked and no longer exists. The problem is that now I can delete neither ...
14
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4answers
5k views

Cannot Share host directory with VirtualBox Guest Mint 16 64 bit

Problem When attempting to mount a shared directory from Linux Mint 16 VirtualBox guest OS, I receive the following error: mount: wrong fs type, bad option, bad superblock on hostshare, ...
14
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2answers
8k views

VirtualBox Solid-State Drive setting ok for spinning disks?

So I noticed with 4.1 that VirtualBox added a "Solid-State Drive" option in the storage section. I also know that Win7 will report free space differently for a solid state disk so that the disk can ...
14
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4answers
25k views

How do I go back to a snapshot in VirtualBox?

I've made three snapshots on VirtualBox virtual machine (winxp). I want to go back to Snapshot 2. If I click on "Snapshot 2" and click Start, it goes back to the current state. I can click on ...
13
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5answers
4k views

Resizing a Virtual Machine in VirtualBox

How can I resize my Virtual Machine, it is only 10GB and I need probably 50GB for this. Is it easy to resize the image?
13
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3answers
8k views

Can I just copy and rename a VirtualBox vm?

I want to create a new vm starting from an existing virtualbox vm. Can I just copy and paste and rename the existing one?
13
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1answer
11k views

Why can't I create soft link on vboxsf file system?

ln -s keeps saying me that file system is read-only, however it is not. ice@distantstar:~/virt ➜ touch file ice@distantstar:~/virt ➜ rm file ice@distantstar:~/virt ➜ ln -s ~/.bashrc ~/virt/.bashrc ...
13
votes
4answers
33k views

Unable to install VIrtualbox, `“Specify KERN_DIR=<directory>”` — installing Virtual Box to Debian?

I am getting this error "Makefile:181: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again. Stop." What is this error and how to ...
13
votes
4answers
9k views

Can I use one virtualbox disk for multiple machines?

I'm not sure what search term to use and skimming through the VirtualBox manual didn't help me either, so I ask my two questions here... My setup is this: PC with dual boot into Windows 7 and a ...
13
votes
2answers
12k views

How do you add more space to a Fedora (LVM) partition?

In a nutshell, i have a VM that ran out of space. I increased the size of the VM's harddrive to be 4 times bigger but the OS partition is still only using 1x the space. I need to change the LVM ...
13
votes
2answers
19k views

How to increase a virtualbox' disk size?

The title says it all. I created the disk and now I would like to increase its size. I know I could add a new one, but I don't want to. The guest os in question is Ubuntu 11.04
13
votes
5answers
5k views

Sharing VirtualBox snapshots

Is it possible to "share" a VirtualBox snapshot? I have a "baseline" VirtualBox machine, and I would like to be able to take a snapshot, and send it to another user which has the same baseline ...
12
votes
4answers
20k views

which file type to install my virtual hard disk in while installing a new machine on virtualbox?

I got some options like VHD, VMDK, HDD, and VDI is there a file type that is most commonly used and is supported by most other virtual disk software?
12
votes
3answers
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Trying to open a VM config which has the same UUID as an existing virtual machine

When trying to add two VirtualBox virtual machines which have been originally copied (via simple file copy) from the same source, on adding the second one I get the message Failed to open virtual ...
12
votes
1answer
140 views

Virtualbox access issue

I have program that sends RTP packets. But I don't know what IP to access. The ip shown in virtual box is 10.0.2.2 but i can't ping it from my operating system... My computer is under work domain, ...
12
votes
6answers
14k views

How can I run a VirtualBox machine as a service on Windows XP ?

I have a VirtualBox machine with Windows XP on a Windows XP Host. How can I start VirtualBox as a service, so I can get a virtual machine under the hood, and I don't have to start VirtualBox in order ...
12
votes
4answers
15k views

Emulate fake monitor on Windows 7?

Is there a way to emulate a monitor on Windows 7? I have one physical monitor, and I want Windows to think I have two. I actually don't care whether the second monitor is visible anywhere, or if ...
12
votes
2answers
34k views

How do I setup a virtualbox server with a static ip?

I'm trying to get a Virtualbox instance running with a very specific networking setup. Here's what I have right now: I have a laptop running Ubuntu, hosting a Debian Virtualbox. My loptop regularly ...
12
votes
2answers
13k views

How to make a virtualbox image of running windows system

Is it possible to do this so that the image is transferred over network connection to some other computer? Or is it even possible to resize the partition on the fly to get rid of unnecessary amount of ...
12
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2answers
11k views

How to get VirtualBox VMs to use host's DNS?

I use VirtualBox for my VMs. My office network setup is wireless, i.e. I connect to my company's WiFi network, which has a local DNS to resolve local names (such as something.mycompany.com going to ...
12
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1answer
9k views

Using virtual box is it possible to set your virtual machine time to be different from host time

Using virtual box is it possible to set your virtual machine time to be different from host time. Say 1 year into the past. If I wanted to run the windows XP images provided by Microsoft from here. ...
12
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9answers
15k views

How to SSH into Red Hat Linux (virtual box guest) from Windows 7 (host)?

I have Red Hat Enterprise Linux (RHEL) running through Virtual Box, my native OS is Windows 7. From a purely educational standpoint, I want to be able to access RHEL from Win 7 over SSH. I downloaded ...
11
votes
4answers
14k views

How can I change the BIOS serial number in VirtualBox?

VirtualBox sets the BIOS serial number of every VM instance to 0. It seems to be possible to change some BIOS settings, but I haven't seen anything that directly references the serial number. Can ...
11
votes
3answers
11k views

Windows 8 Start Screen very slow after Guest Additions

I installed Windows 8 Release Preview on a VirtualBox VM, and it worked correctly. Then I installed the Guest Additions to get the correct resolutions. Now, the Start screen is very slow, takes a ...
11
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4answers
17k views

Linux VirtualBox guest suddenly running extremely slow

Apologies for the very long post, I have posted this on the VirtualBox forums but the activity seems to be quite low and no responses yet so if I may, please bear with me here. Specs Host Linux ...