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

learn more… | top users | synonyms (3)

24
votes
1answer
19k 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 ...
24
votes
2answers
34k 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?
23
votes
7answers
4k views

Is it possible to use a storage disk (such as a USB drive) as RAM?

My motherboard (HP Pavilion s3000y) only supports 2GB of RAM max. Which means that I can only allocate 1GB for running VMs, and applications that use a lot of RAM are slow (such as games and Visual ...
23
votes
2answers
40k views

How do I increase VirtualBox resolution past 800x600 in Linux? [duplicate]

Possible Duplicate: Ubuntu on VirtualBox can only show resolution of 800x600 - how to change it? No matter what I do I cannot get the resolution past 800x600. If I am using a Windows install ...
23
votes
3answers
40k views

How to run a VirtualBox VM from command line?

I want to know how to start a VirtualBox Virtual Machine (VM) from the command line (using Windows 7) as well as shut it down with the operating system. What is an easy way to achieve this?
23
votes
1answer
36k 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 ...
23
votes
4answers
2k views

How can virtual machines consume so little RAM on the physical host machine?

I'm running VirtualBox on a Windows XP machine with 2GB RAM. I've created a virtual Ubuntu machine and allocated it a base memory of 750MB. Just to put it to a test, I ran 20 things at once on the ...
22
votes
7answers
65k 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= and run Make again. Stop. Basically I'm doing: $ sudo /etc/init.d/...
22
votes
7answers
15k views

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 ...
22
votes
3answers
64k views

VT-x/AMD-V hardware acceleration is not available on your system

While installing an OS, I am getting an error similar to: VT-x/AMD-V hardware acceleration is not available on your system. Certain guests (e.g. OS/2 and QNX) require this feature and will fail to ...
22
votes
8answers
12k views

Virtual Machine and Virus

I have a requirement for which I have to get online without protection (firewall, anti-virus). At the same time, I don't want to risk getting infected with viruses. If I install a virtual machine (...
22
votes
1answer
1k views

Cannot reliably automate xrandr settings in Debian 7 on VirtualBox

Although there are several existing questions on the matter (from which the most helpful answer is this) and various threads on other forums, I cannot reliably set my xrandr settings in Debian 7 on ...
21
votes
3answers
12k 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 ...
21
votes
1answer
17k 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. ...
21
votes
4answers
33k views

VT-x/AMD-V hardware acceleration not operational with VirtualBox

I am trying to install OS X with VirtualBox, on my Windows 7 laptop. I see the following error message: VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Certain guests (e.g....
21
votes
2answers
1k 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 OS....
21
votes
3answers
21k views

Dedicated mouse and keyboard for a virtual machine, is it possible?

Let's say I have a PC with two monitors atached. I'm running e.g. Windows Vista natively, and start up a virtual Ubuntu PC. I change to fullscreen mode so that on one Monitor, I see my Windows Desktop,...
21
votes
3answers
6k views

Dedicated Mouse and Keyboard on VirtualBox VM

Currently I am trying to run VirtualBox on my second monitor, with a dedicated mouse and keyboard. However, doing so has not proven easy. There has been times where the mouse works, but not the ...
20
votes
5answers
3k views

Want to distribute Linux virtual machine for students to work on

I have students running Mac and Windows. Every semester, there are always lots of questions about how to install tool “X”. I would like to create a single Linux virtual machine (I have tried ...
20
votes
3answers
3k views

How to install MSDOS from floppy to harddrive?

I have a bootable MSDos system. I would like to install it on the current PC so that I can boot from HDD instead of Floppy. How can I do that? I am doing this in virtualbox, but a general solution ...
20
votes
4answers
28k 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 memory?...
20
votes
4answers
34k 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 "...
19
votes
3answers
4k views

Creating an Ubuntu VM to distribute

I'm a TA for a programming course and tasked with creating a virtual machine image based off Ubuntu 14.04 LTS with all necessary software (for C++ and Python development) preinstalled such that the ...
19
votes
7answers
26k views

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 ...
19
votes
4answers
59k 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 ...
19
votes
5answers
30k 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 ...
19
votes
2answers
20k views

How to fix extremely slow Virtualbox network download speed?

I'm using an Ubuntu 12.04 VM (hashicorp/precise32) via Vagrant/Virtualbox. It seems to have an exremely slow download speed compared to my host system. This is what I get with the host system (OSX) ...
19
votes
9answers
65k 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 ...
19
votes
5answers
37k 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 ...
19
votes
2answers
9k views

How to easily port VirtualBox machines?

I have used VMware for a long time. VMware saves all the information for one machine in one directory. This means it is easy to zip and copy. Now I switched to VirtualBox. VirtualBox seems to save ...
19
votes
2answers
10k views

What are the differences between OVF-Version 0.9, 1.0 and 2.0?

I have Virtualbox 4.3 and want to export different VMs because I'm recover my computer. When I want to export a VM I can choose between OVF-Format-Version 0.9; 1.0; 2.0 But what are the differences ...
18
votes
4answers
1k 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 ...
18
votes
4answers
20k 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?
18
votes
3answers
31k 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 ...
18
votes
4answers
24k 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
votes
3answers
21k 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 ...
17
votes
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
votes
5answers
83k views

How to convert a VHDX file to VHD?

I made an image with disk2vhd and unfortunately I chose VHDX instead of VHD. I didn't see any information about what to choose. Anyway, now that file is all I have, the original PC is trashed. So I ...
17
votes
1answer
15k 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 ...
17
votes
4answers
18k 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 ...
17
votes
2answers
22k views

How does bridged networking work in Virtualbox?

How does bridged networking work? I have looked through the VirtualBox manuals but nothing extremely technical came up (It was just a generic gloss over of the topic). How does it assign a ...
16
votes
1answer
41k views

VT-x error when setting up VirtualBox on Ubuntu

I have tried to setup VirtualBox on Ubuntu, but I get this error even though Intel virtualization technology (VT-x) is set to Yes in the BIOS: Failed to open a session for the virtual machine ...
16
votes
1answer
40k views

VirtualBox 4.3.20 stops working after Windows Update [duplicate]

I have a current version of VirtualBox 4.3.20, but after the latest Windows 7 update on Dec. 11th, 2014, it cannot open any virtual machine. First, it would not open the program at all. After a reboot,...
15
votes
4answers
31k 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?
15
votes
7answers
49k views

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 ...
15
votes
3answers
51k views

Change MacOS X guest screen resolution for VirtualBox

I have tried all alternatives and resources that I found on internet to achieve to change screen resolution in my MacOS X guest. I have the latest VirtualBox version (4.1.22) and I have MacOS X 10.6.3 ...
15
votes
3answers
7k 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 ...
15
votes
1answer
14k views

Resize partition of Windows 7 running on VirtualBox with dynamically allocated storage

I run Windows 7 inside VirtualBox. I resized the disk of Windows 7 from 25 GB to 50 GB: VBoxManage modifyhd Windows\ 7\ Pro.vdi --resize 50000 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...
15
votes
2answers
10k 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 ...
15
votes
5answers
6k 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 machine....