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

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Oracle VM VirtualBox Win 7 Data Recovery

So I'm running Oracle VM VirtualBox with a Build of Windows 7 Ultimate, and the virtual guest OS just crashed out of no where, and won't allow me to access my windows guest os. I wanted to know if ...
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VM crashing on installation in VirtualBox

Installing Ubuntu 12.04 server amd64 on VirtualBox 4.3.26 on OSX 10.10 I select the language then select the default install option, and, after a split second of text scrolling by, the whole VM ...
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Error installing Ubuntu on VirtualBox

I'm trying to install Ubuntu 14.04.2 (x86 and amd64, both fail) on VirtualBox 14.3.26 on OSX 10.10 and I'm getting the following error: [ 0.000000] Fast TSC calibration failed.] Strangely, I was ...
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2answers
57 views

Cannot resize screen for Ubuntu VM in VirtualBox

I installed Ubuntu 14.04 LTS amd64 desktop on VirtualBox 4.3.26 which is running on OSX10.10 (amd64) and the only option for screen resolution is 640x480. This resolution is found under the System ...
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1answer
20 views

How to zero out unused space on UFS filesystem?

I have a FreeBSD system installed in VirtualBox and i want to compact its vdi. AFAIK, before doing this i need to fill unused space with zeros so VirtualBox can shrink it. On Windows there is sdelete ...
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14 views

Can I recover files from a corrupt VirtualBox vhi file from a linux host?

I am running Fedora 21, with a Windows 7 guest running under VirtualBox. One of the data drives is going bad, according to smartctl - /var/log/messages/ has a number of messages along the lines of: ...
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1answer
23 views

Boot from Windows recovery image in VirtualBox

I moved from Windows 8.1 to openSUSE a while ago. Before doing so I made a full system backup image using the native Windows utility for it. Ultimately it created, amongst other things, 3 vhdx files ...
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10 views

How to get the entire log of a virtual machine where i am booting unix

To be very clear i want to read the console of a oracle virtual machine where unix environment is booting up. I have an *.ova file. I have imported it through VM . then after doing some settings i ...
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8 views

Keyboard layout messed up in Linux Mint 12

I have a guest Linux Mint running in Virtual Box (this is an official VM for IGEP development: http://labs.isee.biz/index.php/IGEP_SDK_Virtual_Machine). For whatever reason half of my keyboard ...
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2answers
52 views

Is there a way to create something like a symbolic link from a folder on a Windows machine to a directory on a Linux one?

I have a program that runs on a Windows VirtualBox VM, a and stores data in a specific folder. I would like to work up something like a symbolic link from this folder to a directory on a Linux server, ...
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1answer
12 views

Showing the output of a named pipe from VirtualBox

I created a named pipe in VirtualBox, and I found some pages explaining how to read it's output using Putty, but I don't want to use that. Since Putty is just a frontend to ssh (right?), I would ...
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24 views

Enable multicast between server/client application

I have a VirtualBox VM running openSuse and an application that is meant to multicast data. I also have an application that is on the same machine running on Windows 7 that is meant to receive the ...
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17 views

Call web application on Windows Server running inside VM from Host

I have been given a laptop. Inside this laptop I have a VirtualBox VM running Windows Server 2008. On this Virtual Server I have several sites and databases set up. I created this image to make the ...
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35 views

vagrant vbguest plugin installation failure

I'm trying to setup a vagrant system for rails development following the instructions here https://gorails.com/guides/using-vagrant-for-rails-development. After installing the two plugins, vagrant ...
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1answer
42 views

No Mouse-Up for Chrome on Ubuntu VM; other apps fine

TLDR: I have an Ubuntu VM with the latest VirtualBox, and guest additions, and Chrome (installed from APT: google-chrome-stable). Mouse integration seems broken; I can't move tabs around, nor get any ...
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9 views

VT-x/AMD-V hardware acceleration is not available on your system. [duplicate]

I have a windows 8.1 laptop. It is a lenovo IdeaPad N580. I am trying to run windows 10 technical preview on VirtualBox but it give sme this error: VT-x/AMD-V hardware acceleration is not ...
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1answer
49 views

Can I run a 32-bit Win7 virtual machine from 64-bit Win8

I am completely unfamiliar with virtual machines. I would appreciate guidance on (a) can I do this and (b) should I do this? We were aiming to deploy a solution on Win8. We now realise that one of ...
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53 views

CoreOS on VirtualBox only works with one adapter at a time

I'm trying to learn more about CoreOS. (I'm not using Vagrant, just plain-old VirtualBox.) So I created a disk using coreos-install. Unfortunately, I can't find my original cloud-config.yaml file, but ...
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17 views

Oracle Virtual Box: No option for 64bit vm's [duplicate]

I've installed virtual box on my pc and I want to use 64 bit operating systems inside my vm. Unfortunatly I can only create 32 bit vms (the 64 option is missing completly). I know it should be there ...
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10 views

How to check if a VirtualBox vm has been shutdown properly?

Assuming the host system crashed (hardware failure), how would would one find out which vms were running and crashed (and are now in an unclean state)? VMware Workstation has a clean flag, so ...
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35 views

Setting up our existing Vagrant / VirtualBox instance to use VPN when not in the office

I'm currently trying to edit our existing Vagrant / VirtualBox image so that when users aren't within our office network they connect through their OpenVPN connection on the host computer. After ...
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Virtualbox, Warpdrivepercentage: Is the same possible with VMWare?

Virtualbox has a function to slow down a VM. Called "WarpDrivePercentage". Question: Is the same pssible with VMWare Workstation?
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Does changing external hdd drive will boost performance boost on xubuntu (virtualbox)? [closed]

Now I'm using Toshiba external drive (USB 2.0) - http://www.amazon.com/Toshiba-Portable-External-Drive-HDDR250E03X/sim/B0013FSKSA/2 I'm wonder if changing this drive to something new, USB 3.0 (maybe ...
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1answer
17 views

Networking not working on Packer created Ubuntu VirtualBox VM

I'm trying to build a VirtualBox Ubuntu VM using Packer. My image was successfully created and I configured it to use my Wi-Fi (Mac OS X AirPort) interface for bridged networking. However, after ...
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21 views

Share headset between host and VirtualBox guest

I have a Logitech USB Headset, and I can't get both my host (Ubuntu 14.04) and my VirtualBox guest (Windows 7) to use it at the same time. If I assign the headset to the guest using VirtualBox's USB ...
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37 views

How to convert vmware OS X Yosemite virtual machine to virtualbox?

First I've done vmx to ova : ./ovftool --acceptAllEulas /Users/madzohan/Documents/Virtual\ Machines.localized/OS\ X\ Fuse.vmwarevm/OS\ X\ Fuse.vmx /Users/madzohan/Documents/VirtualBox\ ...
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1answer
11 views

Is there a way to set the number of inodes in VirtualBox when creating a VDI?

Using VirtualBox 4.3.26 in a Windows 7 host to create Ubuntu 14.04 guest. One of my main reasons to do so is process large numbers of small files, taking advantage of a SSD drive on the host. I was ...
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35 views

port forward from host to libvirt guest virtual machine that is bridged to the host nic

I am having no luck getting access from the outside to a http server running on my network in a Debian virtual machine that was created through libvirt. This what my network looks like: PC1: running ...
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42 views

The disk image is invalid in vmware, however perfect when used in virtualbox

We have a vmware workstation with several windows virtuals and a single linux. There was a power cut and after system has booted up i noticed that windows are working good, however linux virtual ...
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1answer
12 views

Is it possible to restore a virtualBox with same files?

So I have a macBook Pro 13-Inch 8 GB RAM 500 GB hard drive with an intel i5 processor at 2.5GHz. I am trying work with Windows 8.1 on a Oracle virtual machine. I have already installed it but since ...
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Error When Resizing Windows 8.1 VM(Host is Macbook Air running OS X 10.10(Yosemite))

I need to resize my Windows 8.1 VM(on VirtualBox) hard drive on my Macbook Air(OS X 10.10) host computer. I did some research and I typed in the following command: VBoxManage modifyhd [UUID] --resize ...
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16 views

Stretch window across two screens in windowed mode

This question is specific to making one guest "screen", in windowed mode, wide enough to span two physical monitors on the host. I know how to get two guest screens in Virtualbox (easy!) or in VMware ...
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84 views

Failed to open VirtualBox with hosts Windows 8.1 and guest Ubuntu 14 (64bit)

I'm using Virtual Box v4.3.26.r98988 with an Ubuntu 14 guest. Up until yesterday, everything worked fine, but when I try and start it now all I get is an error message: The virtual machine Ubuntu14 ...
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1answer
44 views

Virtualbox guests are upsampled & blurry due to DPI scaling from Windows Host, and disabling it has no affect

I have 4k laptop, so DPI scaling is what Windows uses for apps that don't automatically scale. Rightclicking VirtualBox > Properties > Compatibility > Disable DPI Scaling should do the trick. ...
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1answer
37 views

VirtualBox is using more processors than allotted

I have a VirtualBox Windows VM configured to use 3 out of 4 processors (see screenshot), but when my computer froze (see description below) recently, I used top and discovered that the VirtualBox ...
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1answer
26 views

Windows 7 / VirtualBox / VMWare : DNS : local name fails - not even DNS lookup, FQDN works

My problem in short: Entering http://app01:8084/ into the browser does not find my server. Entering http://app01.my.domain.com:8084/ does work. With the localname Wireshark not even captures a DNS ...
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47 views

Running Mac in Full Screen in Vmware/Virtual Box in Windows

I need to test an application in Mac.Currently im running Mac in Windows using VirtualBox but it runs windowed and does not support guest additions,so full screen is not possible.Can VMWare player run ...
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1answer
32 views

Are virtual machine resources available to the host?

I know that when I dedicate HD space to the VM that it can’t be accessed by the host OS, but what about RAM and CPU cores/threads? I always thought that if I dedicate 2 cores and 8 GB of RAM to a VM ...
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Ubuntu 14.04 Desktop as local server - ext4-fs error

I have set an Ubuntu 14.04 as a local server. Also I have two identical hdds on RAID1, on md0. I have tested raid configuration and works ok. I installed virtualbox from the official website and keep ...
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2answers
54 views

can't ping from mac host to windows guest in virtual box

I am trying to ping to the windows 7 guest in virtual machine from mac host. but I get below message ping: sendto: No route to host Request timeout for icmp_seq 5 I set bridged-network in network ...
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1answer
16 views

Vagrant GUI non-alphanumeric key bindings incorrect

I am starting to use Vagrant to stand up a development environment(want to ensure all teammates are developing on same environment) and seeing as it will be a development environment, I need it to ...
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2answers
98 views

Can't install Guest Additions - (Missing 'Devices' Menu on host)

The top menu is wrong (Virtualbox 4.2, Windows 7) Shows: File, Machine, Help Expected: File, Machine, Devices, Help
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1answer
69 views

Slow internet connection speed compared to other hosts in the same network

My home network consists of an ADSL modem, directly connected to the Internet, and two laptops, connected to the modem using wireless cards. One of the laptops uses Microsoft Windows 7 and the other ...
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2answers
39 views

VirtualBox Windows XP has no local network

I’m trying to set up a Windows XP VirtualBox (with Oracle’s VirtualBox) yet it seems I don’t have drivers. In the guest Windows XP, the network section is empty, typing ipconfig in command prompt does ...
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94 views

Cannot connect to sql server express over host-only virtualbox interface

I have set up sql server express 2014 in a Windows 7 virtualbox guest, but I cannot connect to it using the jTDS JDBC driver from my Ubuntu host. I get a Could not retrieve database information error. ...
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oracle virtualbox problems in setup

I have windows 8 pro I was trying to install oracle virtualbox Version 4.3.12. for the genymotion emulator . While installing the installation bar goes till copying files and then suddenly it appears ...
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1answer
53 views

Cannot install Guest Additions on CentOS virtualbox

Windows 8.1 host, have previously successfully created a Ubuntu virtualbox on it. Now I wanted a CentOS box. Choose Redhat 64 bit and created a virtualbox. Downloaded an iso called ...
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1answer
33 views

Convert VMDK to LVM

I'm trying to migrate a VM from my laptop to my XEN server. First I used $ vboxmanage clonehd my-disk.vmdk -format RAW mydisk.img Copy to the server and do the following $ kvm-img my-disk.img ...
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1answer
30 views

How to connect to internet over VPN raised on virtual machine?

I have an PC running Ubuntu, that is connected to the network of my internet provider. To access the internet, one must make a connection using l2tp or ppp, which I have failed to configure on Ubuntu. ...
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1answer
9 views

Fedora 19: Changing runlevel 3 to 5 and it fails to start in GUI

I've installed Fedora 19 in VirtualBox. During the Installation I had choosed Minimal Installation. So its now working Runlevel 3 and not in GUI. So I did ln -fs ...