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 access my local server on my VirtualBox virtual machine?

Here's my setup: I have a local server running on my machine (Mac OS, Snow Leopard). I can access it via my browser by doing localhost:3000 I have a virtual machine using Virtual Box running a ...
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How to configure a firewall on Centos using Vagrant and Chef

I've created a server box using Vagrant and Chef and everything is up and running correctly. However, when the box is installed from scratch the default iptables rules are in place and so I need to ...
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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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VirtualBox command line error

I can run VirtualBox just fine, but when I run anything from the command line I get: VBoxManage.exe: error: Failed to create the VirtualBox object! VBoxManage.exe: error: Code ...
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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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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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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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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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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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How can I run the same Linux Installation on my hardware and in a virtual machine?

I've started some development that requires Linux (I'm currently on Ubuntu, but I may switch to Debian), but I still use Windows 7 for my day-to-day computing. I have already tried a dual-boot setup, ...
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Replace Hyper-V Virtual Disk

Some updates crashed my hyper-v virtual machine. The good news is I created a copy of the vhd file yesterday, will have to reinstall programs, but at least I won't have to start all over. I deleted ...
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Network adapters in Virtualbox virtual machines

When setting up a virtual machine with Virtualbox, in the Network configuration section it is possible to select from various emulated adapters: The default one, automatically selected at the VM ...
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How to run Windows 3.1 under Windows XP (or Windows 7)

We've had a nasty one come up at work. We have to resurrect and modify a piece of code that was last built sometime in the late 1990s. The toolset ran on Windows 3.1 and 3.11. It does not run under ...
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Minimize VirtualBox Hard Drive disk

I have Ubuntu Server 10.04 TLS installed on a Virtual Machine in a VirtualBox. The size of the Hard Drive is dynamic growing hard drive and the maximum is 32GB. At the beginning i had 4GB on the Hard ...
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Keyloggers and Virtualization

Whilst pondering about security, and setting up different VM for certain online activities deemed more risky or requiring extra security (banking, or visiting untrusted websites, etc), I came to think ...
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Virtualized Screen Resolution

I have a 64 bit Ubuntu 9.10 workstation with two virtualized guest OSes using KVM/QEMU. Also both 64-bit. One is Fedora 12 the other is beta of Ubuntu 10.04. The problem is that I would like to use ...
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Fusion: create “headless” virtual machines?

Is there a way to run a VM in Fusion that starts when the machine does, but I can then access via Remote Desktop (Windows) or ssh (Linux) rather than by opening the Fusion app, starting the VM, and ...
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Windows 7 Virtual PC VM 16 Bit Resolution

I am running Windows 7 Ultimate 32-bit with Virtual PC installed. My XP Virtual Machine screen resolution has 16 BIT 1024*768. I can't get it it 32 BIT. I've reinstalled the VM components but to no ...
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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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Pitfalls of Windows XP Virtual Machines

What problems have you faced when registering and activating Windows XP under VirtualBox or similar?
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Listen to audio of a virtual machine in the background?

I know it's a weird question but the scenario is that I am a Windows user and I made a script which reports "something" with a sound in a Debian virtual machine, but when I have it minimized I can not ...
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Is it possible to boot a single Linux installation from both inside a VM and as host?

What I am thinking about is, that I'd install a linux on a hard drive to boot it normally. In addition to that, I'd create a VM on Windows, that would use the same raw mapped hard drive. That way I ...
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Unable to ssh to a Linux VM after a day

I have a machine running 4 VMs on it. There is one Fedora VM which is causing me some trouble. The IPs of the VMs are something like 10.100.100.* I have a Windows PC which is in the same network. It ...
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Is it possible to live-boot VirtualBox from a USB flash drive?

To clarify, I'm not asking if you can boot from USB from within VirtualBox. I would like to make a portable version of Windows 7 that I can run from a USB drive on any machine. I'm putting a distro ...
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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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How Do I Access localHost From VMware

I've created a new WinXP vitual machine on my win7 using VMware player. The VM is using NAT to share the host's Internet connection and when i put http://192.168.163.2/ in IE on VM, i can easily ...
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emulator and virtual machine

I was wondering what differences and relations are between emulator and virtual machine? Is one a special kind of the other, and what are some other kinds in the other? I don't quite understand about ...
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Are virtual machines safe? [duplicate]

Possible Duplicate: Virtual Machine and Virus I am running a virtual machine on VirtualBox. Assuming that I have no shared folders between the host and guest OS, is the guest OS completely ...
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vpn through vpn

The target VPN server I want to connect to allows connections only from one IP address. When I am at my office (the network public IP is trusted on the VPN server) everything is OK, but I figured ...
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Is it possible to run several virtual machines each with independent mouse+keyboard on a single PC? [duplicate]

My goal is to instead of buying 4 separate basic PCs (plus the obvious peripherals), buy just one fast PC and the peripherals. I'm wondering if I can use a more powerful computer, say, one with core ...
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Virtual PC with Multi Monitors

I have recently intalled Virtual PC and was wondering if it possible to make use of both of my monitors with it. I have managed to get a pseudo multi screen effect by connecting using Remote Desktop ...
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How to give virtual machine access to the Internet, but block from LAN?

I am setting up a virtual machine using Microsoft Virtual PC in Windows 7. The VM will run a Windows XP. I want to set up a public-facing server in it for web pages, subversion and other things, and ...
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Running a single virtual machine

How would you configure a computer to run a single virtual machine? Keeping it virtual is important to: Create snapshots Achieve hardware independence The server in question is a build server ...
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Virtual Box ssh not working on Virtual Box Ubuntu machine

I have Ubuntu 12.10 installed, and 12.04 Server set up in my virtual machine. My VM has internet access, and I can ping it from my host. ping symfony.dev # points to 192.168.56.101, and successful ...
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How do I prevent virt-manager from asking for the root password?

When starting virt-manager, it asks for the root password. It looks like virt-manager causes the libvirtd daemon to run pkcheck with a couple of arguments, which then shows this authentication ...
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Some VMWare images take long to resume from suspension as compare to others

I am using VMWare Workstation 7.x. I have a few Windows Server 2003 images which I use regularly. They all started with the same image and were created by cloning. There is some difference on the ...
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CPU modes and recursive virtualisation

I'm trying to get my head around virtualisation and hypervisors. So the top OS, say Linux, runs in ring 0, with userspace programmes running in ring 3. The user boots up VMware, with Linux running ...
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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 ...