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

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How do I create a hardlink in guest user in virtualbox

Apparently, VirtualBox does allow to create hard and soft links inside guest os on shared folders . Now the thing is I need to install a package that is creating hard links Hardlink("lib/abc", ...
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1k views

My guest Ubuntu in VBox loses internet connectivity under NAT but not under Bridged Adapter- why?

I am running Ubuntu Linux via VirtualBox as a guest on top of a Win 7 Home Premium host. Everything was fine until a few days ago when my Internet connectivity started failing in Ubuntu. The default ...
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154 views

Cannot reliably automate xrandr settings in Debian 7 on VirtualBox

Although there are several existing questions on the matter (from which the most helpful answer is this) and various threads on other forums, I cannot reliably set my xrandr settings in Debian 7 on ...
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5k views

Use NVidia GPU from VirtualBox?

How do I make the VirtualBox guest use the NVidia graphics? Host setup: Windows 7 x64 NVidia Optimus In NVIDIA Control Panel, I explicitly selected High-performance NVIDIA processor for: ...
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456 views

Get Illegal Instruction error when booting Linux in VirtualBox, works fine when booted directly

I have a computer on which I am dual booting Windows 7 and Gentoo Linux (both 64-bit). I want to be able to load up my Linux installation in a VM while I am booted into Windows. I have installed ...
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0answers
17 views

Getting Mac Docker client to connect to virtualbox via vagrant

I am trying to expose dockers tcp ip to my host docker client. I have the following setup Virtualbox 4.3.26 r98988 vagrant 1.7.2 Mac OSX Mavericks 10.9.5 Centos 6.6 vagrant box running (docker ...
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0answers
377 views

VirtualBox Port Forward not working when Guest IP *IS* specified (while doc says opposite)

Trying to port forward from host (Mac OS X) 127.0.0.1:8282 -> guest (CentOS)'s 10.10.10.10:8080. Existing port forwards include 127.0.0.1:8181 and 9191 to guest without any IP specified (so whatever ...
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729 views

Is it possible to run Corona SDK on ReactOS or Wine?

I dumped Windows, I'm now using Xubuntu. Is it possible to run Corona SDK on Wine? On Corona forums, they say no, but I wounder how this guy did it? Is ZeroBrane a solution? What about ReactOS (or ...
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409 views

Extreme mouse lag in Starcraft I using VirtualBox Mac Host, Windows 7 Guest

I've installed virtual box on my new MacBook Pro and I'm hosting a Windows 7 instance. Everything works very smoothly. However, I've installed the original Starcraft (yes, 1995! It's 20 years old!) ...
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416 views

Mac 10.8 Guest Multiple Monitors in Virtualbox

I've done a bit of searching and cannot seem to find an answer to my question. I have Mac OS X Mountain Lion guest installed on a virtual machine using Virtual Box with a Windows 7 host. I've found ...
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361 views

Use Biztalk training kit on a Virtual machine

I have a Windows 7 Enterprise 64 bit laptop with 8 GB RAM. I am trying to get the Biztalk training kit() installed on a VM on this machine. I have used Oracle VirtualBox to create a windows 2008 64 ...
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296 views

Linux guest VM can't use host's OSX anyconnect VPN

I'm using cisco anyconnect to get into my work VPN, that on Mac OSX Lion. I created a Xubuntu 12.10 VM in virtualbox and I can navigate the web while connected to the VPN in the OSX host, but I have ...
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0answers
754 views

Virtual Box Bridged network w/ Static IP Win7 host Ubuntu Guest

Last year, I had no trouble with doing the following: Create virtual machine Set network adapter to bridged adapter Set static IP Guest connects to Internet, host connects to guest @ 192.168.1.xxx ...
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0answers
953 views

Keyboard mapping issue in Virtualbox on Mac OS

I run Windows 7 as a VM in VirtualBox on my MacBook Air (using OS X 10.7). If I do not shutdown the VM but save its machine state. The keyboard will behave strangely after resuming. It seems the ...
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158 views

Win7 VirtualBox Server with TeamCity keeps BSODing

I'm testing out TeamCity with a small project (one checkin per day or so, small code base) on a Windows 7 VM in VirtualBox. I've had many successful VMs on this host, some of which were also Windows ...
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545 views

Optimize Mac OS X Snow Leopard for Virtualbox host

I seem to work out of a Linux VirtualBox most of the time (portable USB SSD) on my Snow Leopard Macbook (~2008). How can I optimize Snow Leopard to be an optimal VirtualBox host? I don't mind reducing ...
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2k views

why can't I create directories in virtual box shared folder? Windows 7 host, arch linux guest

I'm mounting a shared folder in an arch linux guest on a windows 7 host in Virtual Box. The shared folder's filesystem is ext3 and is mounted in windows 7 with Ext2Fsd. I mount the shared folder at ...
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2k views

How to prevent VirtualBox VM crashing into “Aborted” when resuming it from a snapshot with running OpenGL application inside?

When I try snapshot/restore-state in VirtualBox 4.0.4, it works. Hovewer, if I try restoring snapshot when some OpenGL-enabled application is running inside VM, VM crashes immediately after starting. ...
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42 views

VirtualBox is unable to allocate cached memory on windows (not considering it as available)

Host: Windows 7 64x bit, 6 GB of RAM Guest: Red Hat 64x bit Host machine resources without running any VMs: Windows Resources [Case I] Guest machine with 2 GB memory When I run a memory ...
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0answers
27 views

Allow device usage only in VirtualBox

I have an USB device, and I want to connect it to VirtualBox, but I don't want to allow any usage of this device on the host machine - it should only forward the device to the guest. How to do this?
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27 views

How to recover from bad VBox Guest Additions build?

I'm using Ubuntu 14.04 (fully patched). Last week, the kernel took an update. So I [virtually] inserted the VBox Guest Additions CD and then proceeded to build it. I don't recall having any problems. ...
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26 views

Using Virtual Box to install Ubuntu Server 14.04 on an external hard drive

I'm trying to install Ubuntu 14.04 onto a server hard drive. The server machine I have only supports booting to CD/DVD, not USB. When I've tried burning the Ubuntu 14.04 installer to a DVD for ...
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0answers
70 views

VM image inaccessible in Virtual Box

I have Virtual Box installed on base OS RHEL 5.5. I am using Windows 7 as a VM image on Virtual Box. While transferring a folder of 600MB on Windows I got a Virtual Box error saying Memory limit ...
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75 views

Cannot connect to the server through host machine that I created in guest machine in Linux Mint

Using virtualbox I am running a server on Linux-Mint(guest) and client machine is windows-8 (host). When I try to connect to the server (which looks like http://169.254.158.126:8080) from windows-8, ...
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207 views

Vagrant windows 8.1 box timeouts - even though the machine boots correctly

I have a simple vagrant master box, that has Windows, drivers for it, and VB guest additions installed. I've added that machine as a box, and tried creating a simple vagrant vm with only the basic ...
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0answers
388 views

Boot USB Tails through VirtualBox?

So I have Tails 1.2 on my USB (Disk 5) and also on a partition (2) on an external hard drive (Disk 4). The USB shows up as 3.75GB and the partition is 6GB. I want to be able to boot either Disk 4 or ...
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0answers
61 views

Debian 7 vs Ubuntu Server 14.04 for 32-bit VM “network nodes”

I plan to make a number of small VM's (virtualbox) that will serve as networking nodes for various VPS servers, local appliances, private domain servers (AD), and various other web services provided ...
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0answers
97 views

Removed VirtualBox DHCP still offers addresses. Why? How can I make it stop?

I have VirtualBox installed on a Windows 8 host. I was using the VirtualBox DHCP server for a while, but now I'm trying to switch over to a DHCP server installed on one of the guests. The VirtualBox ...
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0answers
307 views

Is there a list of keys and values for VBoxManage setextradata subcommand?

The setextradata subcommand of VBoxManage tool of VirtualBox 4.3.12 (and others) provides a lot of useful tweaks and even esential features, like activation of symbolic links with VBoxManage ...
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0answers
2k views

How can I connect integrated webcam with virtualbox

I am trying to use a Windows XP VM for VirtualBox on my Windows 8.1 laptop. I have tried the usual attaching USB device but I get an error saying "USB device is busy with previous request". My webcam ...
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159 views

Behaviour of Caps-lock in Linux on VirtualBox, OSX Host

I'm running Ubuntu under virtualbox on a MacBook Pro and I'm trying to remap the Caps-Lock key to mod3 so I can use it as a replacement for the Alt key in Xmonad. I can remap the keysyms but the ...
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0answers
198 views

Change number of CPUs in VirtualBox is disabled

I'm using virtualbox with Kali and it's working fine, however I currently only have it using 1 cpu and I'd like to add more. However when I go to Settings → System → Processor the fields ...
2
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0answers
714 views

Trouble setting up more than 4 network adapters in VirtualBox (XP Guest)

I've been trying to setup the 8 network adapters that VirtualBox is supposed to support, through the command line. I need them as bridged networks (because I use them to forward ports from a server ...
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0answers
608 views

Putty- Incoming packet was garbled on decryption

I am using putty (v 0.60) to connect virtualbox(v 4.2.16) CentOS. But i am getting the error "Incoming packet was garbled on decryption". When i connect to virtual box IP by SSH its asking me to ...
2
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0answers
116 views

Archipel / Xen Orchestra

I'm hoping you can help me to get my head around this! We want to start using virtualisation. We intend to rent a large server in a datacentre and use this. I was excited to see that XenServer is ...
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0answers
41 views

Can't access virtual machine after plugging ethernet cable

I have VirtualBox installed. My OS is Ubuntu 13.10. I configured a host only network at 192.168.56.1. I have 2 machines the first 192.168.56.20 the other 192.168.56.21. Everything worked fine before ...
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1k views

VirtualBox suddenly disabled auto-resize guest display

I've been using VirtualBox on a Windows 7 host for school for several weeks now. Suddenly today, my Ubuntu box locked up - I shut it down and rebooted, and now my screen isn't resizing as it should. ...
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0answers
121 views

How do different virtual machines handle CPU scheduling?

When you give a guest multiple virtual CPUs (vCPU) the virtual machine has to assign them to physical CPUs (pCPU). I'm can't find any info on how most VMs handle this. There are 2 broad categories: ...
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0answers
134 views

VirtualBox error with Ubuntu virtual machine

I am trying to work on a coding project and cannot open my Ubuntu virtual machine with Oracle VM VirtualBox. I took a snapshot yesterday at about 11, and it was working fine. Several times I closed ...
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0answers
449 views

Dual Boot and Virtualize the Same Partition- Kali Linux in Windows 8

I am trying to virtualize an existing partition, as detailed in this article, as described here in the VirtualBox manual. The Kali install is on a logical partition on the same disk as my Windows ...
2
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0answers
113 views

Extracting blocks from a corrupt VDI snapshot in logical order

I have a Virtualbox VM on an hard disk that failed. The only thing I could recover from the disk was a snapshot of the dynamic VDI disk used by the VM, and I could only recover the first half of the ...
2
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0answers
581 views

Trying to install Fedora 20 as a Oracle Virtual Box VM ; Installer launches to black screen

I'm trying to install Fedora 20 as a Oracle VM Virtual Box; shortly after the installer launches it just goes to a black screen. My machine is running Windows 7 and the Virtual Box install is the ...
2
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0answers
3k views

Why is virtualbox networking using virtio slow (bridged and host-only, Debian)

I'm currently installing a VirtualBox Server using Debian for Host and Client. I experience some trouble regarding network performance and CPU load especially using host-only networks and I've no idea ...
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0answers
3k views

Ubuntu 13.10 is very slow under VMware / VirtualBox running in a Windows 8.1 host

I am the recent owner of a new Levono Yoga 2. The specs of this are: 4th Generation Intel Core i7-4500U Processor (1.80GHz 1600MHz 4MB) Intel® HD Graphics 4400 8.0GB PC3-12800 DDR3L SDRAM 1600 MHz ...
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0answers
384 views

How to Create a Filesystem on Dynamic-sized Virtual Drive - VirtualBox on Windows 7 Host, Ubuntu Guest

Moved here from StackOverflow I made my VirtualBox (4.3.0) Ubuntu VM (on Win 7 host) too small. I have the choice of enlarging the virtual disk (all I read makes that sound dangerous and complicated) ...
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0answers
259 views

disconnecting from Juniper Network Connect VPN on OS X VirtualBox WIndows7 guest fries network

BACKSTORY: Every time I disconnect from my Juniper Network Connect VPN (when running the client on the guest), I get a yellow flag on the network icon in the system notification area of my toolbar in ...
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0answers
45 views

Having problems install win7 by using virtualbox in ubuntu

After installing ubuntu 12.10 on my notebook, I just tried to install Windows 7 64 bit with service pack by using virtualbox. By the time I run virtualbox ,the system said fail to boot. I'm pretty ...
2
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0answers
2k views

Virtual Box Failed to create VirtualBox COM object

I am running Windows 7 64 bit (on a laptop). I just downloaded the latest virtual box binary and it installs but does not start. I get a Caller RC: CO_E_SERVER_EXEC_FAILURE whenever i start ...
2
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0answers
464 views

VirtualBox Guest Additions do not turn on shared clipboard and mouse

I have Windows 7 host with several Debian 7.1 guests installed via VirtualBox 4.2.14. I dont have X Window, or some other GUI addon on my Debian. I have installed VirtualBoxGuestAdditions with option ...
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247 views

VirtualBox E_OUTOFMEMORY

I've tried running both 4.2.14 and 4.2.16 on Windows Vista Home Premium, SP 2 (64 bit). Shortly after starting a freshly-installed VirtualBox, I get a Failed to load the global GUI configuration ...