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

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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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9 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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5 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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12 views

What is better to upgrade SSD or Ram for VirtualBox Productivity Enviroment [on hold]

My host OS: Windows 8.1 My guest OS: Ubuntu 14.10 System Information: 4GB Ram, 5400 rpm HDD I works mainly on guest OS (programming, web surfing) and host OS for Gaming and Windows Programming ...
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13 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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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
35 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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17 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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15 views

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

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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8 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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17 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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2 views

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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1answer
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Does changing external hdd drive will boost performance boost on xubuntu (virtualbox)? [on hold]

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
11 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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5 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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20 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
10 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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17 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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24 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
7 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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11 views

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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10 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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23 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
14 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
35 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
19 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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26 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
25 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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9 views

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
38 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
9 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
40 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
61 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
25 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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1answer
38 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
23 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
25 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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19 views

VirtualBox VMs turn off randomly [closed]

Yesterday after I deleted my old AD user account and replaced it with a local administrator account all 70 (35 of which are currently running) of my VirtualBox VMs disappeared from the VM list in the ...
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1answer
25 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 ...
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16 views

Scientific OS vm guest on Win 7 host doesn't full screen

It used to work perfectly buy all of a sudden it stopped working. I have reinstalled guest additions but this doesn't solve it. The "Auto-resize Guest Display" option in view is grayed out. Host: ...
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1answer
30 views

VERR_ACCESS_DENIED error with Virutalised existing linux partition

I have installed both ubuntu 14.04 and windows 8.1 on my harddrive but due to certain circumstances I need to virtualize my linux partition. I have been able to login successfully into it but then ... ...
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11 views

Cannot acces in centos 7.0 in virtualbox any pendrive

System is up to date, I did everything as answered here How to access USB pendrive on using VirtualBox? and have not any results. What could cause such behavior?
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VirtualBox Network confusion?

I'm trying to adjust my VirtualBox guest network in order for my guest O/S traffic look like its coming from my Host. Can I do this with NAT? Here's a simpler outlook on what I am trying to achieve ...
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38 views

Where to put “VirtualBox VMs” folder and “iso” files for optimal performance

Just installed VirtualBox for the first time. The host is a Windows 7 OS machine with 8GB of RAM and i7 CPU. I bought an SSD drive (Samsung 840 EVO) specifically to have better performing VMs. My ...
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15 views

Making a host-only connected virtualbox guest a part of the hosts apache or nginx network

I have an instance of Apache running that hosts a very basic web presence. like this. This URL is resolved to the server host where it serves some simple static content. On this host, there is a ...
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1answer
37 views

Wireshark - Browser software

I just touched wireshark yesterday from my class. I was told to run wireshark while browsing www.kompas.com, and there is this question that is quite ambiguous. "What browser software shown in ...
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19 views

virtualbox (osx host and linux guest), only shared folders with read/write work, those with read only permissions do not

I'm using virtualbox (with osx as the host and linux, debian 7, as the guest). Shared folders with read/write permissions set to automont work fine. But if I set the same folder as shared and ...
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29 views

Hyperthreading for virtualbox virtualization? [closed]

I'm trying to figure out whether or not I should buy an Intel CPU that has hyperthreading for a virtualization server I will be running. A quad-core Intel Core i5-4690 or a quad-core with ...