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

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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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How can I make my OS appear as if it is running virtualized?

A lot of malware these days is able to detect when it is running virtualized under VMWare, VirtualPC, WINE, or even in a sandbox such as Anubis or CWSandBox. This essentially means that malware will ...
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Full hardware emulation

I want to emulate some old desktop PC in order to run my application there (the emulated machine) as a stress test. Is this possible? I looked around and some people mentioned Qemu, which is Open ...
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How does VmWare Workstation perform with SSD drives?

I have read a lot of information on using SSD drives in virtualization environment and the possible problems with not supported TRIM command. I fully understand what the TRIM is, what the problems ...
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Implementing PCI-Passthrough with Linux-KVM on Debian

I am attempting to use PCI-Passthrough to attach an old video card (Radeon 4770) to a virtual machine. I am using Linux-KVM to run my virtual machines on a Debian Linux (Wheezy, 3.2.0-4-amd64) host. ...
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Is it possible to virtualize the iPhone OS?

I was wondering if it was possible to virtualize an iPhone's OS on my Mac. Maybe through VMware or another application?
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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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Forcing monitor resolution in VirtualBox VM on Linux Guest

I am working in a VirtualBox 4 VM running Slackware-current. I have added an external monitor, and am attempting to set up both of them to run in their native resolutions, but am having no luck. I am ...
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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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Virtualizing Windows Home Server

I'm thinking about virtualizing Windows Home Server, mainly just for some testing and troubleshooting (right now, anyways -- nothing long term). I've got hardware that should easily pull it off, but ...
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VMware: How to directly access the GPU

I have VMware Workstation running on Ubuntu host with a Ubuntu Guest. Is it possible to directly access the GPU from the VM? I want to run CUDA on the VM
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Looking for tips: building a workstation around Xen and GPU pass-through

I'm building my new home machine right now and as usual this will be a heavily overloaded workstation that will serve as development and testing machine, file server and game console (plus I'm adding ...
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Configure VirtualBox to connect to Internet through proxy

I'm currently trying to run Chrome OS in VirtualBox 3.0.1. Windows XP Pro is the host system. The actual behavior is Chrome OS starts up fine, reaches the login screen. Once so, when trying to log ...
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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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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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MacBook Pro for Windows development via virtualization. Performance?

I am a Windows/Web developer by profession and I have been considering a MacBook Pro as a replacement for my current development machine. I am impressed by the build quality, the uni-body construction ...
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Is it recommended to run a firewall/router on a virtual machine?

Googling found me people saying running a firewall/router as a virtual machine is "dangerous" but none of them gives any reason as to why it is so. I also found posts from people who are successfully ...
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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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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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To RAID or not to RAID: SSDs and virtualization

I am approaching that time where my main PC has slowed enough due to Windows rot that I should probably reinstall. Instead of spending a week arm-wrestling, reinstalling and configuring only to find ...
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How do I convert an .img file to vhd?

I have an image file (linux based image) and want to convert it to VHD so that it can be used to create hyper-V VMs. I used "qemu-img convert" to convert raw to vpc format, but vpc doesnt work for ...
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Does QEMU's performance (still) lag VirtualBox's and is there a way to improve it without the hardware support+kvm kernel module?

I've noticed several articles that have claimed that QEMU is slower than VirtualBox (without hardware assistance) but several are years old, and the newest seemed to be from last year. Is it true ...
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Virtualise a physical Windows 95 PC

I recently found my old Windows 95 PC in the attic. Is it possible to virtualise it before I dispose of the hardware? What is the best way of achieving this? The machine doesn’t have USB. I might be ...
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Windows 7 [virtualized] resolutions in Macbook Pro Retina

So, I was considering picking up a Macbook Pro Retina, but then I realized that Apple forces you to scale the resolution, so you don't actually see the true benefits of the 2880x1800 display. Instead, ...
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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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Hyper-V Virtualisation Disabled in Firmware

I'm on windows 8 and i've been trying to use hyper-v to set-up a virtual machine. When I go into the "Turn Windows Features On or Off" the box to select Hyper-V platform, it is grayed out and when I ...
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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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What desktop boards support VT-D or IOMMU? [closed]

I'm looking for a desktop board that supports either VT-D (Intel) or IOMMU (AMD) technology. This is the IO virtualization technology, not VT-x for CPU virtualization. I've found a list of chipsets ...
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virtual machine with dedicated GPU - is it possible? Private GPU Cloud

This is also referred to as cloud GPU. I want to build a VM host (VMware or windows - or other?) that will have 8 GPU's on it, and the VM clients will be able to use the GPU's as needed. It can ...
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Xen for a Windows/Linux desktop machine

So here's the deal: For some time, I've been running Windows as my main desktop OS with Gentoo Linux in a VM. I've been thinking that running the systems concurrently in a hypervisor instead of one on ...
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How compatible are VMWare and VirtualBox?

At my workplace, everyone uses VMware Player (and some people have licenses for Workstation). We frequently share VMs to save time on development setup. However, I would really like to take advantage ...
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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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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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Experimenting with Virtualization

I want to try Google OS. For that purpose I am planning to install virtualization software. I have the option to use VMWare Palyer or VirtualBox. I am absolute beginner, and even though I understand ...
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x64 Hardware Virtualisation support not detected on Windows 8.1

I get the following error (and yes I know this has been reported many times, but please read further): VT-x/AMD-V hardware acceleration is not available on your system. Your 64-bit guest will fail to ...
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What is an efficient way to set up different VM's to do cross browser testing

I have checked out several links, and also this question: http://stackoverflow.com/questions/2565505/whats-the-best-way-to-do-cross-browser-testing I came to the conclusion that the best way to do a ...
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Windows Virtual Machines will not run

I'm trying to setup a few virtual machines to use for testing websites in the various old versions of IE. I had Microsoft Virtual PC working on an older machine using XP mode and 2 other VHD's from ...
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How can virtualization be efficient?

As I understand, the virtual machine and the guest OS doubles the amount of abstraction layers (that are computationally relevant) between the user interface and the pure power of the hardware. Some ...
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enable AMD-v on Asus M4A88T-M with AMD Phenom II X6 1090T

I've problems with x64-virtualisation in VMware Workstation. I don't know what's the problem: Hardware: AMD Phenom II 1090T (does support AMD-v), ASUS M4A88T-M Mainboard and 8GB of RAM. That should ...
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How to create a virtual machine on Windows 7?

I'd like to create a virtual machine running on Windows 7. On Win XP / Vista I have been using either MS Virtual PC or VMWare Workstation. I believe I heard somewhere that virtualization is part of ...
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Dual-Virtualization vs. Dual-Boot vs. Single-Virtualization

A friend of mine recently suggested something that intrigued me: in the case of needing multiple Operating Systems simultaneously, instead of dual-booting or using multiple computers, one could use a ...
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VMware tools for Ubuntu 10.10

When will VMware publish a version of VMware tools for Ubuntu 10.10? The small screen is killing me.
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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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How should I virtualise my workstation?

Soon my fancy new 120GB SSD will arrive for my laptop workstation I use for PHP development and other misc tasks. I really don't want to bog it down with heaps of software, so my current plan is to ...
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Feedback on Using ZFS and FreeBSD

I need to create a server that will be used solely for backing up files. The server will have 2TB of RAID-5 storage to begin with but I may want to add additional storage later on. As such, I am ...
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Would it be worth it to virtualize an entire home network?

Certainly this is a subjective question which depends primarily on one's finances, but perhaps I can receive some feedback. We all know that most computers become obsolete after a few years. Although, ...
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How to map host PCI device to virtualbox?

In a virtual box it is possible to map host's USB device. But is it not possible to map host's PCI device to guest system? How is it possible to connect (map) a PCI device to guest OS? Our host ...
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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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What information about a vmware host is available to the guest?

In vmware Workstation, what information about the host software and hardware is made available to the guest OS. For the purposes of my application, I'm concerned about a process on the guest OS ...
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Are there any pros/cons to enabling virtualization on my computer?

If I am not using any virtualization software on my computer, do I gain or lose anything by enabling (or disabling) x86 virtualization?