A virtual machine is an emulation of a guest operating system, running on virtualized hardware within a host operating system.

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How to permanently disable kvm modules in Linux?

In order to get virtualbox to work in Linux I have to run the following commands as root: modprobe -r kvm_intel modprobe -r kvm otherwise I get an error. This works well. The only problem is that ...
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Disabling annoying VMware Player tool tip “To release input, press Ctrl+Alt”

[Same as Hide annoying VMware hint "To release input, press Ctrl+Alt" but for VMware Player, because that answer was for VMware Workstation] When starting the VMWare Player, at the top it ...
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How to create a virtual machine from a .img disk image?

I downloaded a disk image used for a wargame hosted by stripe, but I cant figure out how to create a virtual machine form this image. I'm using virtualbox, but I could use another tool if it would be ...
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How to copy command line text to host clipboard while using Ubuntu on VmWare?

I have host machine running Windows 7 and VmWare running Ubuntu in command line mode. When I am trying to copy content of command line of client machine to host machine - it is not working. There is ...
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Start specific virtual machine in VMware in Unity mode on host startup

When I boot up the host computer I'd like the VM to boot up too and enter unity mode. Both OS's are Windows 7. How can I do this?
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Using VMware/Virtual box to simulate a cluster of nodes, but actually using a single machine

I am developing a webapp using Cassandra database which works on a multi-nodes cluster. But I don't have multiple machines to create a cluster while development. How do I create a cluster using the ...
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More than one XP Mode virtual machines okay under Win 7?

I really like the Windows XP Mode virtual machine that comes with Windows 7 (once you download the integration components). I teach technical training classes, and having a machine configured for the ...
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VirtualBox USB 3.0 Storage Settings

I'm taking a college course where we are using VMs to safely work with the Linux kernel, and as such, we've been told that it would be useful to have our VM stored on a flash drive (if we want to work ...
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Create Google Maps screenshots at regular intervals

Background People are concerned that building a pipeline to the West Coast of Canada will increase the number of oil tankers, thus increasing the probability of a major oil spill, thereby creating an ...
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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) - ...
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Converting a Windows 2000 Physical Machine to a Virtual Machine

What's the best way to create a virtual machine from an old Windows 2000 machine? I found VMware vCenter Converter Standalone 4.0.1 which is the last version to support Windows 2000. Are there any ...
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VirtualBox freezes during runtime when running from Win7 but not from Linux

I have a virtual box disk on my NAS so I can use it from Windows as well as Linux. This works fine except on Windows (7) the VM sometimes freezes. The NAS (QNAP TS-109II) occasionally sends me an ...
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How to hide from a program that it is running on a virtual machine?

Some software contains tests to see if they are running on a virtual machine. It's very unpleasant to see alert messages such as "Sorry, this application cannot run under a Virtual Machine." and have ...
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Do VMware, Virtualbox & Virtual PC play nicely together?

Lately VirtualBox has been a bit unstable and I want to try other VMs. If I install VMware and Virtual PC on the same host as VirtualBox will it cause problems (eg. crash the host)? What if I try to ...
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What is the best VM for developing WPF apps from within OS X?

All of my machines are Macs (Mac Pro, MacBook Pro, MacBook Air and Mac Mini (and Apple TV 2.0 too! :) ) but for my day-job, I develop .NET/WPF applications. Normally I just boot into Boot Camp and ...
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Tor in virtual machine - 502 bad gateway

I'm trying to run Tor in virtual machine. It used to work, but now when I try to access sites I get "502 bad gateway" error from Privoxy instead of requested site. I tried fixing time to correct one ...
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VMWare Player will completely hide taskbar, and behave oddly after locking workstation

At work, I develop on a PC running Windows Server 2008 R2. Due to some application constraints, I also run a Non-Commercial version of VMWare Player using Windows 7 on top of my Windows Server. When ...
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Can't take control of USB drive on VMware

I’m running VMWare Workstation on Windows 7 x86-64, and a Mac OS X 10.8 install inside the VM. Whenever I try to connect my USB drive to the Mac OS X 10.8 guest, it just doesn't gets recognized. The ...
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What is a good (free) VM solution for windows 7

The obvious candidates are Virtualbox and Virtual PC. But I have not been paying attention to VM's the last year, have I missed a good alternative?
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Linux kernel yield() functionality

When I start VMWare Player it gives me this message: How can I setup my system so that this yield() functionality is automatically enabled?
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Can guest OS break host OS?

Suppose, I use Debian unstable or experimental version as guest OS. After installing new software it completely breaks the system. Can it also affect host OS?
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does Windows 7 come with something like Virtual PC built in?

does Windows 7 come with something like Virtual PC built in? I have an i7 which is suppose to be great with virtualization and I wanted to try it out. Is there a specific app I should get that takes ...
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How do I check if a program can potentially be a virus?

I am running Windows XP in a VM. I want to download a few applications and install the one by one and check if they potentially can be a virus. I assume virus would need to add something to the ...
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Easiest setup for someone new to Virtual Machines?

I've never used a virtual machine, but I'd to start.. What's the easiest setup in terms of software and operating system? What's free? Any tips for someone completely new to the virtual machine ...
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Should I run Windows Virtual Machines on a Windows or Linux host?

I have currently have a PC with 16GB of RAM. I will be running multiple virtual machines using VirtualBox. Would I get the best performance from running the VMs on a Linux host, or a Windows host? ...
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Start up with a virtual machine

Is it possible to use a virtual machine like a kind of dual or multi-boot? I mean: The computer starts up directly in the virtual machine and the you can chose what kind of OS you want to use (after ...
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What causes a Virtual PC “virtual machine” to be locked?

I'm using Virtual PC on Windows 7 and have periodically gotten this error when trying to shut down: Cannot shutdown a locked virtual machine. Google search on "locked virtual machine" Virtual PC ...
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64-bit Windows guest in VirtualBox impossible without VT-x support?

I have successfully installed Windows Vista 32-bit in a VM with VirtualBox. Now I'm trying to do the same with Windows Vista 64-bit and it just isn't working. I have created the VM but it seems that ...
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Client Hyper-V in Windows 8 : Synthetic Ethernet Port: Failed to finish reserving resources

I am unable to run any of my virtual machines with a network connection. I get this error when I try to start them: Synthetic Ethernet Port: Failed to finish reserving resources with Error ...
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Where can I find a Windows VM image?

I am running Windows XP Home and would like to run a virtual machine of XP, Server 2003, or Windows 7. Where can I find a VM image to download? The only XP image I've found only works on Windows 7.
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How can I best explain what a virtual machine “image” is to a non-technical person?

Does anybody have a good description or know where I could find one?
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If I have a .vhd file, can it be used by Virtual PC 2007, VirtualBox, and Windows 7's Virtual PC?

If I have a .vhd file, can it be used by Virtual PC 2007, VirtualBox (open source), and Windows 7's Virtual PC (the newest Virtual PC)? Can you even run Virtual PC 2007 on a .vhd file, and then shut ...
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How to create virtual machine environments?

I want to create a number of virtual machine environments for testing new beta releases - Windows 7, VS2010, Windows Server 2008 and so on. My host OS is Windows XP. What is the best way of going ...
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All I want is copy and paste

This is really frustrating. I have a Windows 7 virtual machine inside a Windows 7 host. I can bring it up fine and it works great, but copy and paste between guest and host does not work. So go I ...
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Development Virtual Machine - Is Windows XP still a possible option

I want to separate my development work from my routine work. My host OS is Windows 7. I was wondering if Windows XP would be a viable choice for the guest OS. I do not own a copy of Windows XP now. ...
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Cutting Ubuntu to the bone for Virtualbox VM

I've been looking around for a Linux variant which will install only the software I need rather than everything Ubuntu (for example) puts in by default. This is to create a virtual machine in ...
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How to turn a Windows XP partition into a VirtualBox virtual machine?

How can I turn a hard drive with XP into a VirtualBox virtual machine?
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How to launch VMWare Server?

I'm feeling really dumb asking this, but VMWare Server has stumped me. I've installed VWware Server 2.02 on Windows Vista. I want to install XP in a virtual machine. All instructions start with ...
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Is it possible to have an AIX virtual machine running on Windows?

A couple of years ago I was told this is not possible, well... actually i didn't understand why. As time goes by, so are days off our lives, is it still impossible? Or now there are some solutions?
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Can a vm be a reliable test machine?

My apps must run on legacy Windows up until 95. I don't own any hardware that could run such outdated OS's but my clients do. I develop my apps on Windows 7, but all use plain old C++ and stl along ...
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Headless VBox - VRDE not working

I have imported an existing machine on a freshly installed VirtualBox 4.1.6r74727, running on a Ubuntu Server 10.04 box. The guest OS is Windows Server 2003. Further, I have modified the VM as ...
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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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How to hide a linux pc from network?

I installed a Linux virtual machine in my windows machine, but I don't want my network admin see the Linux VM. Is there any way to hide it?
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Is XP mode in Windows 7 better than a regular virtual machine?

I've read that Windows 7 Professional and Ultimate come (or offer as a free download) some kind of special VM for running programs that only work in XP. But is this any different than just installing ...
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Modern.ie Windows keep shutting down in VirtualBox

I run VirtualBox and and a VM from www.modern.ie (Win 7). It runs fine but after tabbing away from it for a while it seems to shut down. Is there some automatic shutting down option in VirtualBox ...
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Antivirus for my virtual machine [duplicate]

I have a home computer with Windows 7 64-bit Pro installed. For nearly all of what I do, this setup works great, but I have some web applications which won't work. I've experimented and discovered ...
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How can I emulate more virtual CPU processor cores than physically available on Windows?

Is there a way that I could emulate the number of logical/physical processors for Windows like virtualization (VM) ? I need to simulate processors of about more than 64 and see some minor ...
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Is there a way to store files in memory?

I have this problem with chrome: Whenever g Google Chrome is open my HDD spins really fast Anyway, after reading this, exerpt: Hi Tim, You can also tell Chrome to use a random folder for the ...
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How to clone VirtualBox VM?

I'm running Windows 7 64-bit and need to clone a VirtualBox VM of Windows XP Pro. How do you do this on Windows 7?
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vmware linux headers not found for ubuntu 10.10?

I've installed Vmware 6.5 on Ubuntu 10.10... when I start vmware player/workstation its asking for linux kernel header for some compilation but I'm not able to find the appropriate package, see the ...