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

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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
7k 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....
14
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3answers
31k 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
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3answers
30k views

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 ...
14
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2answers
47k 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 ...
14
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3answers
9k 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?
14
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5answers
10k views

How to (legally) get Windows virtual machine on linux via VirtualBox without buying Windows

My goal is to install Windows 7 on a virtual machine running on Ubuntu. The Lenovo machine came with Windows 7 installed, but did not come with a boot disk. What are my options? Should I ask Lenovo ...
14
votes
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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4answers
30k views

Ubuntu and Linux Mint only run in Software Rendering Mode on Virtualbox

I am trying to figure out why Ubuntu and Linux Mint only run in Software Rendering Mode on Virtualbox. My motherboard supports hardware virtualization and it is turned on, and I have installed the ...
14
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3answers
23k 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
2answers
13k views

How do I remove a VirtualBox host only network adapter

On OS X, 10.10, if I start a Vagrant based VirtualBox VM that is configured with a host only network adapter and then destroy that VM and attempt to re-create it with the VMware provider the vboxnet# ...
13
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5answers
68k views

VirtualBox/Ubuntu full screen mode resolution

I created an Ubuntu 14.04 desktop VM using VirtualBox, and installed guest additions. By default, at startup, VBox wants to present the guest's GUI in a parrticular size that is smaller than my actual ...
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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4answers
48k views

How can I clone a hard drive directly to a vdi image

I would like to make a VirtualBox .vdi image out of my hard drive. I've found howto's online that describe doing this by first usind DD to create a .raw image, then using VBoxManage to convert the ....
13
votes
4answers
24k 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 3.2....
13
votes
7answers
23k views

Is there an optimal setting for the number of CPU cores exposed to a VM?

VirtualBox, and possibly other VM software, allows the user to specify the number of CPUs exposed to the VM. In my particular case, I have a dual core CPU, with Windows 7 64-bit running natively, and ...
13
votes
6answers
20k views

Change resolution from command line in virtual box

In virtual box, how can I change the screen resolution from the command line? (Or if there's one for any type of computer, that might work too).
13
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2answers
14k 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
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5answers
22k views

How to permanently disable mouse integration in Virtualbox?

The "mouse integration" feature in Virtualbox is pretty handy in most cases, but I need to have it disabled. Unfortunately, it looks like I have to press Host+I at every boot of the virtual machine. ...
13
votes
1answer
6k views

VirtualBox Mac - Is it possible re-map a key for a VM

I am running Windows inside VirtualBox on Mac OSX. However, I am frequently copying and pasting/undoing etc using keyboard shortcuts. Because Mac is dumb and tries to be different, common shortcuts ...
13
votes
9answers
20k 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 ...
12
votes
3answers
14k views

VirtualBox - XP guest does not see multiple cores/multiple processors

Environment: Host OS: Win7 Pro 64bit Guest OS: WinXP 32bit VirtualBox version: 4.1.4r74291 Processor: Intel Core i7 2630QM with virtualization enabled The Problem: I need the guest system to use ...
12
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2answers
10k views

Error while installing virtualbox

I am running debian 7 and trying to install virtualbox using: sudo apt-get install virtualbox and getting this output: Selecting previously unselected package virtualbox. Unpacking virtualbox (...
12
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4answers
21k 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 ...
12
votes
2answers
30k views

Proper way for changing MAC address in a linux VM?

I tried to change the MAC address in a ubuntu VM (virtualbox), but after that it threw lots of errors during boot, and then I had no internet connection. Then I saw that the interface was renamed to ...
12
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6answers
16k 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
3answers
11k views

VirtualBox: Start tag expected, '<' not found

After restarting VirtualBox on a hard drive almost full, the VM I was using in "unaccessible", with this error message: Start tag expected, '<' not found
12
votes
1answer
152 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
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 ...
12
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4answers
34k views

How to connect to VirtualBox remote desktop client using VNC?

I am using VirtualBox 4.0 on Ubuntu Narwhal with guest OS Windows XP. I've installed the VB extensions and enabled remote access through port 3389 as suggested on several sites. I am trying to ...
12
votes
2answers
14k 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
votes
3answers
4k views

VirtualBox shared folder hangs on read in guest OS

I'm running VirtualBox 4.2.18 with a Windows 7 host and Ubuntu 13.10 guest. I'm trying to set up a shared folder, but attempting to read the folder from the Ubuntu VM appears to hang indefinitely. ...
12
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7answers
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SSH into VirtualBox Guest: Connection Refused

Setup Windows 7 64-bit host OS running VirtualBox 4.2, with Ubuntu 12.04 guest OS. OpenSSH server is installed and running (ssh -v localhost connects locally in the guest machine). Can SSH to ...
11
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2answers
32k views

Can't install Guest Additions using VirtualBox, Ubuntu guest OS, Win7 host OS

I'm new to VirtualBox and Linux. I've set up VirtualBox 4.0.4 on Windows 7. Successfully created a virtual machine running Ubuntu server 10.10 64 bit. I'm trying to set up Shared Folders. Prerequisite ...
11
votes
8answers
11k views

VirtualBox bidirectional clipboard sharing stops working after some time on a Linux guest OS

Clipboard sharing starts working fine, but it stops working after some time (until I reboot the machine). From what I understand sometimes the guest additions stop working. I read that I should see ...
11
votes
3answers
20k views

How can I import an existing .vbox virtual machine in VirtualBox?

How can I import an existing .vbox virtual machine in VirtualBox? The instructions say I can only do this if I have an .ova or .ovf file, but I don't understand this as VirtualBox machines are .vbox ...
11
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3answers
7k views

Why is the recommended memory on a VirtualBox guest OS 512MB?

I am preparing to create a virtual machine on VirtualBox. The wizard asks for the memory size to use for this guest machine and it is recommending 512MB. I have 16GB of memory on my computer so I ...
11
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3answers
24k views

How to create an empty floppy image with VirtualBox Windows guest?

Is there a way to create empty floppy disk images, which I can use with VirtualBox? The client is Windows XP.
11
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6answers
2k views

Virtualbox, VMware, KVM or other for Ubuntu virtualization?

Is any one of these better than the others? What are the differences in practical terms for home use?
11
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2answers
22k views

Using Samba to share a folder from a Linux guest with a Windows host in VirtualBox

I would like to share a folder from a Linux Guest with a Windows host (with read and write access if possible) in VirtualBox. I read in these two links: here and here that it's possible to do this ...
11
votes
8answers
25k views

Mouse disappear in VirtualBox

I am using latest version of VirtualBox (VirtualBox 4.3.6 for Windows hosts) and after installing any OS and clicking inside of it mouse disappear. It is not visible until I press right CRTL. Anyone ...
11
votes
2answers
6k views

VirtualBox - how to free up unused VDI disk place?

So if I have a dynamical storage in virtualbox guest, how can I reduce the VDI's size, if there are many unused place in the guest? So I mean I know the virtualbox guest in reallity is about ~3 GByte'...
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
votes
5answers
12k views

Resize a VM hard-drive (virtualbox)

Is there a way to resize a VM hard drive? I am using virtualbox and I have a VM that has run out of space, looked into the settings but it seems I may have to create another partition. I thought ...
11
votes
3answers
6k views

Disable Windows Key hotkeys when using Virtualbox

I'm currently running a VirtualBox of Arch Linux with Windows 7 x64 as the host. In Arch, I use dwm for window management. As dwm is heavily dependent on hotkeys, I've used the Alt key as its META key ...
11
votes
4answers
22k views

Transferring VirtualBox Virtual Machines to another computer

Is there any way to transfer VirtualBox VMs, with their operating system and all their files intact, to another computer?
11
votes
3answers
21k views

Create Virtualbox image of a physical partition

I've a drive with Fedora and Windows 7 on different partitions with dual boot. Now, while running Fedora, I'd like to suck up the Windows partition and create an image I can run in VirtualBox - how ...
11
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3answers
10k views

How to merge arbitrary snapshot into base vdi in Virtualbox

I botched a transfer of a VM from one harddisk to the other. Now I'm left with the base vdi and a whole bunch of snapshots. My steps Copied old VM directory over to new HDD Deleted old VM and ...
11
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1answer
330 views

When does a VirtualBox snapshot actually happen

I spend a lot of my job writing documentation for the installation of software on my employer's servers. Sometimes this is quite complicated, so I do the initial work inside a virtual machine running ...
11
votes
2answers
13k views

how to access samba on a guest Linux behind the VirtualBox NAT?

On my laptop, I'm running Ubuntu 9.10 under WinXP using VirtualBox 3.1.2. I want a setup where: The guest can freely access the internet. The host can access the guest files via Samba. The setup ...