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

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21
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3answers
60k 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 ...
6
votes
1answer
3k views

VirtualBox - guest Ubuntu loses DNS when host connects to VPN

I have Ubuntu guest OS in VirtualBox using default NAT for eth0. Works fine at the office and at home EXCEPT when on office VPN from home. When the host OS (Windows 7) is connected to the VPN, DNS ...
5
votes
1answer
9k views

Running VirtualBox on a Windows 8.1 host

I have a Windows 8.1 Pro 64-bit machine, with an Intel Haswell i7 processor, and 8GB of RAM. I installed the latest VirtualBox (4.3.6) and I'm trying to install a Linux guest. I've tried several ...
4
votes
2answers
5k views

crypt32.dll is broken for Virtualbox since patch Tuesday 9-Dec-2014?

In the last 18 hours my Windows 7 Pro 64-bit machine has rebooted in response to the Windows Update applying patches. Now I find when I try to start the VirtualBox Manager (not the actual VM's which ...
2
votes
2answers
3k views

Resolution Issues running Ubuntu on VirtualBox

I have an Ubuntu 9.04 guest running on a VirtualBox VM hosted by MacOS X Tiger. I'm trying to increase the screen resolution as the guest by default unfortunately supports only 800x600 and 640x480. I ...
7
votes
6answers
57k views

VirtualBox Fatal: no bootable medium found! System Halted

I just download and then tried to add new virtual machine. But it gives me an error. I couldn't find the solution. it seems that VM can not find the OS. I do not know how to resolve. Error is: Fatal: ...
5
votes
3answers
2k views

How to import VMware Workstation 7 VM into Sun VirtualBox (latest version)?

I am planning on installing the latest version of VirtualBox on my Windows 7 machine. I made about 6 VMs using Workstation 7.0 and want to import these into VBox. What is the best way to go about ...
3
votes
2answers
6k views

How to access Guest (Linux) Filesystem from Host (Windows) in VirtualBox

I am trying to synchronize my music between my desktop (Ubuntu 9.10) and my laptop (VirtualBox: Windows 7 host & Ubuntu 9.10 guest) I use Unison to perform the actual sync, which itself is not the ...
2
votes
1answer
992 views

VirtualBox - 64 bit OS on a 32 bit host - Pros and Cons

Is is possible to run a 64 OS in a virtual environment host that is 32 bit. Say for example, I am running Windows XP 32 bit. Would it be possible for me to run a 64bit OS using VirtualBox or VMWare. ...
2
votes
4answers
12k views

Use bootable vhd with Virtualbox

I want to create a bootable Windows 7 vhd using the steps mentioned at: http://www.microsoft.com/downloads/details.aspx?FamilyID=80ede31d-3509-407b-a896-0beea8705589&displaylang=en However, I ...
121
votes
5answers
111k views

Connect to the host machine from a VirtualBox guest OS?

I'd essentially like to access my host computer from the guest in VirtualBox. Is there an IP address given for my host which I can use from the guest? Are there extra steps required to set this up? ...
41
votes
3answers
27k views

How can I start a VM without getting a window? [duplicate]

VirtualBox has a window showing the display of the guest OS. I am connecting to VirtualBox with Remote Desktop, so I don't need VirtualBox to show that window in the host OS. Of course, I can ...
44
votes
6answers
62k 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 ...
23
votes
2answers
32k 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?
39
votes
3answers
62k views

VirtualBox Host ssh to Guest

I have a mac host, and a VirtualBox Linux guest, currently using Bridged mode. I need to be able to easily SSH into the guest from the host. It would be nice to use a hostname, but a never-changing ...
42
votes
3answers
31k views

Share VirtualBox folders in reverse? Guest-Host?

I'm familiar with the process of installing Guest Additions and sharing host folders with the guest, but is there a way to do the reverse? I have an XP host and Ubuntu 10.10 guest, with VBox 4.0.2. ...
12
votes
4answers
15k views

My virtualbox fstab will not auto-mount on reboot?

I am able to mount my drive manually like this (ubuntu): sudo mount -t vboxsf C_DRIVE /mnt/saga_c But when I try and add it to my fstab it does not mount when I restart the machine. Is there ...
29
votes
5answers
31k views

Ubuntu Server VM: copy paste?

I've installed Ubuntu Server under Virtualbox just to get a nice little shell. I've also installed the VirtualBox "Guest Additions" and set "Shared Clipboard: Bidirectional". I still can't seem to ...
52
votes
3answers
158k views

How do I press Ctrl+Alt+Delete in VirtualBox?

I'm running VirtualBox with Windows Vista as host OS and Windows Server 2008 as guest OS. To login to Windows Server I have to press Ctrl+Alt+Delete, but my host OS reacts on that so I can not send it ...
21
votes
3answers
11k 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 ...
9
votes
2answers
16k views

VirtualBox: How can I add (mount) a ISO image file from command-line?

There was before in VirtualBox command-line a command with this syntax: VBoxManage controlvm <VM> dvdattach <filename> So attaching (inserting) a CD/DVD was as easy as: VBoxManage ...
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 ...
12
votes
3answers
48k 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 ...
7
votes
2answers
10k views

VPN connection with VirtualBox

I am on a Windows PC running VirtualBox with Ubuntu installed. I have my networking setup as NAT. On my Windows PC, I am connected to a VPN, but I cannot access those VPN resources from VirtualBox (I ...
8
votes
6answers
13k views

micro linux distro for virtual box

Is there a tiny linux distro for running in virtual box or other VM, centred about running a single app, perhaps using the X-server installed on the host? I kind of imagine something that pretty much ...
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 ...
17
votes
4answers
17k 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 ...
10
votes
2answers
48k views

mount gives unknown filesystem type 'vboxsf'

I'm getting an error message mount: unknown filesystem type 'vboxsf' when trying to mount a shared folder on my guest Ubuntu machine. I have a Windows 7 machine running 4.1.22V Oracle VM VirtualBox. ...
9
votes
2answers
9k views

Forcing monitor resolution in VirtualBox VM on Linux Guest

I am working in a VirtualBox 4 VM running Slackware-current. I have added an external monitor, and am attempting to set up both of them to run in their native resolutions, but am having no luck. I am ...
7
votes
2answers
7k views

How to correctly sync time in linux running as virtual guest after host resumes from hibernation?

I use multiple virtual boxes for development and correct time and date is important for me when I push git commits. I do not shut down my host - it runs for months without restarting. I only hibernate ...
7
votes
2answers
7k views

exporting a virtualbox VDI to a harddrive to boot it natively

I have a VirtualBox 3.1.2 image of Debian 5.0.2 running on Windows XP SP3. I would like to export that Debian image to a USB harddrive such that I could boot to that drive and run it natively. Is that ...
5
votes
5answers
6k views

What is the best way to hide a command prompt window

I'm running the headless interface of VirtualBox (VBoxHeadless.exe) with Ubuntu Server running on it. Every time I run VBoxHeadless, it starts a command prompt window which just sits on the taskbar ...
5
votes
2answers
21k views

How do I convert a VirtualBox VDI file to a VMware vdmk?

I'm using VirtualBox 2.1.4 and want to convert a VDI file to load it in VMware Player (3.0.0 build-197124 on Vista Home Premium). I think I can change the VDI format to vmdk with a tool provided by ...
4
votes
1answer
13k views

How to mount a VirtualBox .vdi disk on Linux?

I am running Fedora on a VirtualBox. Sometimes to allow for performing some real hardware testing, I need to run my development environment on a physical machine. So I need the hard disk of the ...
3
votes
1answer
8k views

How to Use a Shared Folder in VirtualBox with AndroVM

I'm trying out AndroVM and cant figure out how to access a shraed folder with VirtualBox. The instructions say it needs to be called mysdcard, which I did. But I can't find it in the android. What do ...
2
votes
4answers
7k views

VirtualBox CPU usage 100% on host [closed]

I have installed VirtualBox 3.1.2 (latest) on my Windows 7 (x64). In the VirtualBox I've installed Windows 7 (x64). I have 4 GB RAM installed. The guest has been assigned a 1536 MB RAM. Sometimes the ...
20
votes
4answers
27k 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 ...
9
votes
6answers
4k views

VMWare vs VirtualBox …what I should use [closed]

what I should using to work with linux on windows ... I don't know ! ... but I tried VirtualBox and VmWare what's the differents and which are the feutures
5
votes
2answers
28k views

Convert Parallels VM to Virtual Box VM?

The question describes well what I need but here are some more details about the circumstances. With Parallels Desktop 4 running under Linux, I have a number of Windows 7 Virtual Machines. Sadly, ...
4
votes
3answers
8k views

How to add a display mode to a VirtualBox VM?

I am using my first VirtualBox VM in order to run Windows 8 Preview on my Windows 7 machine. It looks like only a few resolutions are available for me to choose. My physical display is 1600x900, so ...
4
votes
2answers
1k views

How to reduce VM size?

I have a Virtualbox VM, with a .vdi that is taking 49gb in the host machine. I may have used that much space inside the VM once, but now I'm only really using about 6gb. I tried this command for ...
3
votes
3answers
22k views

VirtualBox Windows x64 Error 0xc000035a

I get this error when i try to install Windows server 2008 x64 via VirtualBox. Windows failed to start. A recent hardware or software change might be the cause. To fix the problem: 1) Insert ...
2
votes
2answers
3k views

How do I create a wifi network bridge with qemu on OS X?

I grabbed a small FreeBSD live CD and QEMU, and I'm trying to bridge my Mac OS X 10.8 wifi connection so that the guest OS is available on my LAN. However, the guest OS never gets a DHCP lease. This ...
1
vote
1answer
5k views

Cannot setup PCI Passthrough for display adapter in VirtualBox

VirtualBox supports PCI Passthrough and I'm trying to attach my graphics card to the guest OS (host is Windows Server 2012 and guest is Windows 8.1 Professional - so they should both work with the ...
1
vote
1answer
4k views

Use Ubuntu Server as web server on Mac OS X via VirtualBox

I have successfully installed Ubuntu 12.10 Server edition using VirtualBox 4.2.6. I have set up terminal SSH access to the Ubuntu guest from my Mac OS X (host) I have installed nginx, mysql, etc by ...
14
votes
1answer
13k 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 ...
7
votes
2answers
6k views

installing on a physical drive with virtualbox/Windows

How can I install a guest system on a physical drive/partition in virtualbox running on a Windows host ?
5
votes
3answers
10k views

Run Windows inside a virtual machine on Linux for gaming

Since making the full time move to using Linux (Fedora) from Windows, I've found the migration fairly easy and haven't had much disruption in how I do my work. However, there are some games I like to ...
5
votes
2answers
6k views

How to run an encrypted virtual machine?

I wonder what is the best practice for storing the virtual machine encrypted. I tried putting the image it a TrueCrypt volume, but it doesn't work nicely: With the volume unmounted the VirtualBox ...
4
votes
3answers
4k views

What Virtualization Servers support Windows Clients with Direct X?

In advance I'd like to state this question is similar to its predecessors here and here but, those questions are old and I would like an up to date answer based on current technology. I want to host ...