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

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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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25 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
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
105 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
44 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
111 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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25 views

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
57 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
34 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
11 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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18 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
110 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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16 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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20 views

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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22 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
38 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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38 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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138 views

Increase screen resolution in VirtualBox guest without VirtualBox guest additions?

Without VirtualBox guest additions installed, the only screen resolution is 640x480: $ xrandr xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 640 x 480, ...
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20 views

Keep VirtualBox vms running even after a logout/crash?

Recently, the nouveau driver crashed on the host system, so X was restarted and all running VirtualBox vms crashed along with it. Is it possible to run VirtualBox vms independent of the current X ...
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9 views

unable to access internet from client VM which is connected to another Ubuntu VM acting as a router

I setup 3 ubuntu VMs on virtual box with the following configuration VM1(acting as router with 3 interfaces): interface1: bridged to wireless interface on host system(ubuntu 14.04) for internet ...
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20 views

Can I stretch a Remote Desktop session to fill up the entire screen?

I have MS DOS 6.2 installed on a virtual box. Within the virtual box settings I have Remote Desktop enabled as a display output. The host machine is running Linux Mint 17. I access the DOS machine ...
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1answer
110 views

Installing laravel and homestead on windows 8

For the past few days I have been having a few problems trying to install laravel. I've finally made some bit of progress today when I figured out that I need to have vt-x enabled but I'm still having ...
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16 views

Why won't Metasploit open a Meterpreter session?

I'm running Kali Linux in a VirtualBox VM. After starting a malicious local web server using Metasploit, I try to access it on my other PC. But, after connecting to the local IP, my browser just ...
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1answer
30 views

running a virtual machine with Cent-OS but problems occur

I have a windows 7 OS on my desktop and I have VMware Player installed. I did not use easy install when I created a VM that has Cent-OS installed. When I reboot the VM, I tend to get stuck in this ...
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1answer
23 views

Virtualbox: getting guest to capture certain key presses

I am using Ubuntu as host system, and CentOS7 as guest system, how, can I send for example certain keypresses or keypresses combination like Alt+Ctrl+F2, but to switch between terminal session in ...
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1answer
36 views

Windows 8.1 VirtualBox: Mouse cursor is black ugly graphics-error style box

I have installed Windows 8.1 on VirtualBox on Ubuntu 14.04. It works, however I have a problem with the mouse-integration feature of the guest additions (4.3.24). Whenever, the pointer transforms ...
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44 views

How can I make a VirtualBox Guest read a SD card in the slot built-in to the laptop?

I’m running Kali Linux in VirtualBox. In order to plug in a device to the “Virtual USB Port”, you must select the “Devices” tab, hover over “USB Devices”, and select the device you require. However, I ...
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71 views

Bridging multiple networks with a tinc vpn in virtualbox, won't forward packets properly

I set up a network with some VMs in VirtualBox. It consists of: 1. The host, OS X. It is connected to the Arch VM described in 3. via a host-only adapter. OS X has the IP 172.31.2.100/16. 2. ...
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12 views

Distributing workspaces through VM images

I want to get a dev workspace up and running on a local VM and then save its state and distribute it to others to work on the same workspace. How is this possible with VMware or virtual box?
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1answer
169 views

“An invalid parameter was passed to a service or function” when using a flash drive with Windows 8 inside VirtualBox

How do you fix the error "An invalid parameter was passed to a service or function" when using a flash drive with Windows 8 inside VirtualBox
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11 views

Scientific Linux 5.5 hangs at the beginning

We are taking theses days a parallel processing course in college, we are working on scientific linux 5.5 version with MPI, I just imported .ova on the virtual box but unfortunately when am trying to ...
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54 views

Virtualbox bridged networking on OVH server

I can't get that working even thou I configured it few times on other machines. Probably it's problem with something ovh-specific, or maybe I just twisted myself hard enough by now. Clean install of ...
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23 views

Having trouble building Vagrant bash script

I'm trying to set up a bash script provision to help build my virtual machine with Vagrant, but I'm clearly doing something wrong. Unfortunately the Vagrant docs don't provide any examples more ...
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0answers
24 views

Network connection error. Data-link layer working. Static/DHCP ip assignment failing, with no connection

Trying to connect two virtual machines through a windows (host) tap adapter. One virtual machine is a pfsense router running on VirtualBox, the other an emulated rapsberry pi running raspbian on qemu. ...
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10 views

VM sharing over network

I have an HP ProBook 4530s laptop upgraded to 8GB of RAM. I also have a Pentium III PC with 1GB of RAM. On my HP ProBook I have VirtualBox installed with some virtual machines (Windows XP, PC-BSD and ...
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25 views

VirtualBox guest can be pinged fine but pings with high packet loss

I've got a VirtualBox guest Ubuntu 14.04 LTS Server running on an OS X Mountain Lion host. The host is hooked up with both wired and wireless and therefore has two IPs; the guest is configured to use ...
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61 views

Virtualbox with i7-4790 one thread per virtual machine

I’m considering buying an Intel Core i7-4790, which has 4 cores and 8 threads. With a 4 core, 8 thread CPU you should see 8 CPU available in the green slider area; see picture below. I set the ...
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16 views

How to change `Virtualbox VMs` directory's name on OS X?

I installed Virtual Box on my mac and would like to change the name of the directory that has all my virtual machine folders Virtualbox VMs because it's too long. I unsuccessfully tried CMD+, to ...
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24 views

Using TAP adapters for network bridging/connection?

Using virtualbox with a windows 8.1 host, I am using TAP adapters in the host to bridge networks with mixed and (to my eyes) inconsistent results. A few scenarios I have tried: ...
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1answer
20 views

Multiple Virtual Machines with unique IPs accessible via physical network?

How do I need to configure my network adapters in order to have multiple Virtual Machines with unique IPs that are accessible outside the host PC? I currently have two virtual windows servers but I ...
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0answers
13 views

virtualbox - creating shared folder for existing folder in the client OS

I would like to ask if it is possible to create shared folder with virtualbox, so that the folder will point to already existing folder in the client OS. the client OS it Linux, and the host OS is ...
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1answer
98 views

IIS URL-rewrite doesn't work

I have an IIS setup with redirect rules that work perfectly fine on my Windows machine. However - I'm starting to use Mac - so I installed a VirtualBox VM with windows on it and used the exact same ...
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1answer
52 views

Win 7 - “unidentified network” / “virtualbox-host-only network”

I somewhat strangely cannot connect my computer (Win7) to the internet anymore because it is "currently connected" to an "unidentified network". Network Center says I'm on the "VirtualBox Host-Only ...
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11 views

Virtualbox internet through browser login issue

I'm working on a Windows host machine that has internet through an Ethernet cable after which I need to do a login through a webportal (it's Kotnet). Previously, when working with a bunch of Linux ...
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121 views

Virtualbox Failed to load VMMR0.r0 (VERR_LDR_MISMATCH_NATIVE)

Computer got hard rebooted with an active guest and ever since I cannot get VB to work. Reinstall, uninstall, scrounge every VB file I can find on the hd and delete, clean update to new version. To be ...
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21 views

How to create a VM from archived linux?

There is a full backup of a 64-bit ubuntu called fullbackup.tar.gz which needs to become a live virtual machine. Is that even possible? VirtualBox file is preferred.