Virtualization is the process of using software to emulate an entire computer, in which "guest" operating systems can run.

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How to reuse VirtualBox disk “snapshots”

I have a "suite" of 5 VMs I'd like to make, all Ubuntu Server 12.04 guest OSes but with radically different software stacks on top of the OS (one server is a "build server" with Subversion, Hudson, ...
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393 views

Enabling Hyper-V in Windows 8

I've been following the guide linked below to enable Hyper-V in Windows 8 so that I can try out a few Linux distros without having to mess around with my UEFI bootloader on my machine, however, this ...
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834 views

Can I tell if my VPS server (win 2008) is hosted on Hyper-V from within the image?

Is it possible, from within a windows 2008 virtual private server, to tell if the image is hosted in Hyper-V or some other virtualization technology? For example, are there any guest-os extensions ...
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Can I run XP as a virtual machine with this hardware spec?

I run Ubuntu Jaunty on a laptop with this spec: CPU (Intel Centrino Dual Core): Genuine Intel(R) CPU T2300 @ 1.66GHz Memory: 1GB Is it possible to run XP as a virtual machine and get decent ...
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Use physical harddisk in Virtual Box

Using Virtual Box, how can I install an OS to a secondary, physical disk, and boot it in both (at separate times) Virtual Box, and as a typical secondary OS install?
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How to get VirtualBox VMs to use host's DNS?

I use VirtualBox for my VMs. My office network setup is wireless, i.e. I connect to my company's WiFi network, which has a local DNS to resolve local names (such as something.mycompany.com going to ...
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18answers
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Vagrant ssh fails with VirtualBox

vagrant up fails when it gets to the ssh part: myterminal$ vagrant up [default] VM already created. Booting if its not already running... [default] Running any VM customizations... [default] Clearing ...
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Convert VirtualBox guest into main OS

Is it possible to somehow convert my guest OS to the Host OS? I have a PC and would like to physically install my current Ubuntu VM into my new notebook. Is it possible?
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Is it possible to split VirtualBox Hard Drive to multiple volumes?

VirtualBox hard drive usually has one or a few files when you create a drive. I think it is good because you manage only a few files. However, I have out of space of my drive. Is it possible to span ...
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How to copy VirtualBox VDI contents to a partition and dual boot the OS from it?

I'm a Linux user but I keep a compressed Windows XP ISO with me on a pen drive for the case I absolutely need Windows to do something. This works in VirtualBox most of the time. But now I want to ...
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How to Maintain a small differential Virtualbox hard drive

I am trying to use a virtualbox hard drive over several computers using dropbox (a popular cloud tool) synchronization. I assume no two machines will open the same drive at the same time. To reduce ...
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How do I get a bridge network to work for VirtualBox with Linux guest on a Mac OS X host

Does anybody have the step by step configuration process that would allow VirtualBox running a Linux/Ubuntu guest on a Mac OS X host use the bridge type network using Ethernet and wireless? I have ...
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Any Way to run Mac OSX software under Windows?

I know that you cannot run MacOSX within a virtual machine, but I am curious if there is something similar to WINE that emulates MacOSX enough to allow running some MacOSX software under Windows. ...
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Are there any benchmarks showing difference between hardware virtualisation enabled/disabled?

I have a 13" sub-laptop/large-netbook, it has an AMD Athlon Neo X2 L335, and I chose this one because it supports hardware virtualisation. In the end, I hardly do any virtualisation on it, however, ...
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Access localhost on Mac OS X from Parallels machine

i need to test my web site, running on a local Mac, under several browsers in Windows. I use Windows XP, installed in Parallels Desktop. It would be great, when i will be able to access my http://...
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Emulate fake monitor on Windows 7?

Is there a way to emulate a monitor on Windows 7? I have one physical monitor, and I want Windows to think I have two. I actually don't care whether the second monitor is visible anywhere, or if ...
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why does Virtualbox use 15-20% CPU when VM is paused?

I run VirtualBox 3.1 on Ubuntu with a Win XP guest. I have noticed to my surprise that when I pause the VM (its screen grays out) VirtualBox continues using 15-20% of the host's CPU. Is this normal ...
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64-bit or 32-bit guest for a 64-bit host ? (VMware)

So, here is my all-timer question. Never seen a total answer to it, so please guys, help me out. I have an Intel Core i7 CPU with every hardware stuff enabled (except hyper-threading). My OS is a ...
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Cannot boot after vhd hard drive is resized in VirtualBox

In Windows 7, I set up another Windows 7 VM in VirtualBox. It worked great. Then, I needed to increase the vhd HD size. So, I used VBoxManage utility to do that with the following comment: VBoxManage ...
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How do I find the IP address of a virtual machine using VMware Fusion?

Can I determine the IP of a virtual machine using VMware Fusion without actually entering the operating system running on the virtual machine? I'm looking for a menu option, command line, or otherwise ...
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Virtualbox 4.2.10 Auto resize not working. Will auto-resize down but not up unless in full screen

Using Virtualbox 4.2.10 with Windows 7 as host and guest. If I press Ctrl+F, the OS goes full screen. If I check the resolution, it says 1680×1050 -- same size as my host OS that has many (...
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How to import an Image for VirtualBox

I have VirtualBox installed on Ubuntu 64. I have a few Images I need to import into my Virtual Box. What I got is a file with *.ovf and a file with *.vmdk What am I suppose to do with those files?
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Oracle VirtualBox - Unable to update to Windows 10

I'm using Oracle VirtualBox 5 and my virtual Windows offered an Update to Windows 10 today, but it stops saying: VirtualBox Graphics Adapter The display manufacturer hasn't made your display ...
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1answer
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VMWare VM's network card not working after VirtualBox installed

I use VMWare workstation and have had no problems with my virtual machines and bridging the network card. However, I installed Virtualbox to check it out and ever since I can't establish a network ...
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Is it possible to create an isolated environment to install 3rd party application into?

I am looking for a utility / method to install 3rd part applications, such has embedded compilers, into its own isolated environment, including registry. On Mac OS X I use homebrew to achieve this. ...
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VirtualBox: have higher guest resolution than host resolution

Is there any way to have a guest machine have a huge resolution (like 3000x2000 or something) in VirtualBox? I'd like to be able to move around the desktop by scrolling around. It seems like it would ...
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What is the world's smallest-footprint LAMP stack? [closed]

What is the world's absolute smallest known VMWare/VirtualBox image supporting basic Apache/PHP/MySQL functionality? Before or after compression.
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How to shrink Windows 7 XP Mode VHD files?

I'm trying to shrink a Windows 7 XP Mode VHD file with VhdResizer with little success. When I select my VHD file, it says "VhdExpand only supports fixed and dynamic VHD files". My XP Mode VHDs are ...
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Windows 7 Virtual PC + Linux Ubuntu

I've installed Ubuntu inside a virtual machine running on Windows 7's Virtual PC. One thing I've noticed right away is that it has to capture the mouse and not all the hardware works as expected. I ...
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Minimal OS for running virtual machines

Is there a minimalistic operating system built purely for the purpose of running virtual machines (preferrably open source / otherwise free)? If not, let's say I decided to do something like Linux ...
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Best way to virtualize physical Windows 7 installation in Linux?

Ever since I saw a friend running Windows 7 inside Mac OS X with VMware Fusion, I've been trying to do the same on my laptop, in order to avoid having to reboot every time I have to use a Windows ...
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VT-x/AMD-V Work-Around For VirtualBox?

After converting a Parallels VM to VirtualBox, the converted VM still does not run. VirtualBox says: VT-x/AMD-V hardware acceleration has been enabled, but is not operational.... Please ensure ...
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How to detect if VT-X has been turned on in the BIOS?

I know I can check is VT-X is supported by a processor by egrep '(vmx|svm)' /proc/cpuinfo. But even if it's supported, it can be turned off in the BIOS. How can I detect if it's turned on or off?
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Are there any open source app virtualization solutions for Windows [closed]

I am looking for open source solutions that provide application virtualization for Windows! In other words an open source to ThinApp from VMWare. I have found several commercial options, but nothing ...
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3answers
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VirtualBox running Ubuntu is slow (Mac OS X host)

My MacBook Pro is generally a fast machine (3.06 Ghz Core 2 Duo, 8GB of RAM, 7200RPM hard drive) but VirtualBox 3.2.6 running Ubuntu 10.04 is just too slow compared to VMWare. What can I fiddle with ...
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Cannot install Hyper-V platform on Windows 8.1 Pro

I have a problem related to installing Hyper-V on Windows 8.1 Pro x64. I decided to experiment with some Windows Phone 8 programming. In order to install the simulator I need to have Hyper-V platform ...
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5answers
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Why is Hardware Assisted Virtualization disabled by default?

Why would vendors by default set hardware assisted virtualization off? I have a Lenovo Thinkpad X201 (64bit) but it seems this is the case with other vendors too. I want to run some virtual machines ...
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5answers
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Run a dual-boot operative system virtually

I have a dual-boot system with Windows 7 and Ubuntu 11.10 installed on separate partitions, according to the following partitioning scheme: 1. MBR for windows 2. Windows system partition (NTFS) - i.e....
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Can I boot up a virtual machine natively?

My question is: Is is possible to run a virtual machine natively on your hardware if you have installed the proper drivers etc? In other words, can I use a VHD as a regular hard drive to boot from? ...
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VirtualBox NAT port forwarding on Ubuntu 64?

I have an Ubuntu 9.04 desktop 64-bit guest OS running on an Ubuntu 9.04 desktop 64-bit host OS (yes, the same OS). I'd like to run a web server on the guest and make it accessible through NAT on the ...
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2answers
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Are there any downsides to enabling Hardware Virtualization in the BIOS?

I was wondering if there are any downsides (even theoretical) to enabling Hardware Virtualization in the BIOS. I noticed that it is disabled by default, and perhaps it is that way for a reason ...
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Performance impact of running Linux in a virtual machine in Windows?

I'd like to know what performance impact I could expect running Linux in a virtual machine in Windows. The job I need Linux for is heavy and almost non-stop code compilation with GCC. Dual-boot doesn'...
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5answers
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How does it hurt to use Linux (Ubuntu) as a guest OS for all my tasks?

I have a machine running Windows, where the disk has two partitions C (50 GB) and D (250GB). I do research in Information Retrieval and need to work with a large corpus (more than 50 GB) and in Linux....
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2answers
13k views

VM share host's VPN connection

I am trying to get a (guest) VM running on my (host) machine to talk to a (remote) VM running God knows where on some server that is accessible via corporate VPN. I am able to SSH from the host to the ...
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Which virtual machines exist for Linux besides VirtualBox? [closed]

What virtual machine software is there for Linux besides VirtualBox?
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VirtualBox network configuration

I have a CentOS 6.1 virtual machine, virtualized with VirtualBox on Windows XP. This machine hosts my local development MySQL server. I'd like to find the correct network configuration, so that: my ...
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Dual-boot AND Virtualize Both Windows 8 and Ubuntu

Dual-booting Windows and Linux is well-documented, as is running one of the bootable OSes as a VM inside the other (ex, dual-boot Windows & Ubuntu; in Windows, host Ubuntu in a VM using VMWare ...
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How to add virtual NICs to my linux PC, so that they expose their MACs to ISP's domain?

I have learned how to add virtual NICs to a guest system in VirtualBox, just using Shared Adapter, then all the virtual NICs and my host's NIC will appear as real NICs to the ISP. So I guess there ...
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Can I avoid losing three IPs per network on a bridged Xen networking setup?

About a month ago, I asked this question on Superuser. The answer given there certainly works, but I've run into an issue I haven't thought of before. The setup I had running (based on the previously ...
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VirtualBox from an existing partition

I installed VirtualBox on my Ubuntu Hardy Heron installation, and I would like to use it to virtualize Windows for those rare occasions that I actually need to do something there. Unfortunately, I ...