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 can I take browser screenshots at a higher resolution than my browser supports?

I need to take a screenshot of a website as it would appear on a very high resolution monitor... say 4000x3000 pixels. My laptop's screen has a native resolution of 1400x768. Basically, I need to ...
68
votes
9answers
72k views

How to move VirtualBox files?

By default VirtualBox stores all data in a directory below the home directory. I know how to change it but how can I change the location of existing images (without editing VirtualBox.xml manually)? ...
32
votes
1answer
56k views

How do I install and use Windows Virtual PC in Windows 8?

I really liked the integrated Virtual Machine that Windows had built-in with Windows 7, known as the Windows Virtual PC. I'm looking to install that again. I'd like to be able to install multiple ...
31
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8answers
84k views

Why Virtual Box won't give me option to create 64 bits guests?

My host is x64 bits Windows 8.1. I downloaded the latest Virtual Box (4.3) and I'm trying to create a VM with a 64 bits Ubuntu OS (ubuntu-12.04.3-desktop-amd64). When I go to New VM wizard, it ...
30
votes
4answers
54k views

Is it possible to convert virtual machines to physical environments?

Is is possible to convert a .vdi file into a .iso that can be burned to a cd or dvd and make it like an installer. Or Is it possible to convert virtual machines to physical environments?
29
votes
7answers
4k views

Is it possible to “virtualize” an existing PC?

I'm running Ubuntu Desktop 12.04, and I was wondering if it was possible to somehow take my whole filesystem (everything under /) and create an ISO from it. Then, perhaps, use that ISO as the file ...
28
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7answers
27k views

Can a virus from a virtualbox vm affect the host computer?

Can a virus from a VirtualBox VM affect the host computer?
26
votes
2answers
19k views

What's the recommended way to move a VirtualBox VM to another computer?

I use VirtualBox 4.1.x on my Ubuntu machine and I've set up several virtual machines. Since there are several ways one can move a VM in VirtualBox to another computer, I was wondering which one is the ...
26
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2answers
9k views

How to run a minimal Linux inside a running 64-bit Windows 7

On my previous Windows Vista laptop, I used to run Portable Ubuntu Remix for Windows, which is based on coLinux, like the similar andLinux. This worked fairly well with limited system resources (a ...
25
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7answers
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How to access an SD card from a virtual machine?

I want to format an SD card from my Linux virtual machine. I have a built-in SD card reader in my laptop. I tried using VirtualBox and VMware Player and installed Ubuntu 10.04 guest. None of them are ...
23
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4answers
1k views

How can virtual machines consume so little RAM on the physical host machine?

I'm running VirtualBox on a Windows XP machine with 2GB RAM. I've created a virtual Ubuntu machine and allocated it a base memory of 750MB. Just to put it to a test, I ran 20 things at once on the ...
22
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7answers
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How does VirtualBox's memory usage work?

I've been running several VM's with VirtualBox, and the memory usage reported from various perspectives, and I'm having trouble figuring how much memory my VMs actually use. Here is an example: I ...
21
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3answers
4k views

Dedicated Mouse and Keyboard on VirtualBox VM

Currently I am trying to run VirtualBox on my second monitor, with a dedicated mouse and keyboard. However, doing so has not proven easy. There has been times where the mouse works, but not the ...
20
votes
4answers
35k views

How do I convert a VDI HDD to a VHD file?

Is there a tool or a way to convert a VDI HDD to a VHD?
20
votes
4answers
18k views

Is my host machine completely isolated from a virus-infected virtual machine?

If I am running a Windows 7 virtual machine on a Windows 7 host using VMWare or VirtualBox (or anything else) and the virtual machine is completelly overloaded with viruses and another malicious code, ...
20
votes
4answers
11k views

How do I get out my embedded Windows 8 key from a Linux environment?

I have seen other SuperUser questions on this topic: How to find Windows 8 product key? | How to find Windows 8 OEM product key? However, all of the answers assume you have Windows 8 running. I've ...
20
votes
5answers
653 views

Why does VM software need to know which OS will be running inside the VM?

When I create a new VM (with VirtualBox) it will ask me what OS will run inside the VM. Why does it need (or like) to know that? Will it result in better performance? Will some things work / not ...
20
votes
8answers
10k views

Virtual Machine and Virus

I have a requirement for which I have to get online without protection (firewall, anti-virus). At the same time, I don't want to risk getting infected with viruses. If I install a virtual machine ...
19
votes
2answers
8k views

How to easily port VirtualBox machines?

I have used VMware for a long time. VMware saves all information for one machine in one diretory. This means it is easy to zip and copy. Now I switched to VirtualBox. VirtualBox seems to save the ...
18
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6answers
5k views

Which virtual machine software is preferable for running Windows 8 Developer Preview?

I want to preview Windows 8 and decided to install it on a virtual machine as I don't want to format an existing partition. Installing Windows 8 by mounting the .iso results in the primary ...
18
votes
5answers
18k views

Ubuntu Server VM: copy paste?

I've installed Ubuntu Server under Virtualbox just to get a nice little shell. I've also installed the VirtualBox "Guest Additions" and set "Shared Clipboard: Bidirectional". I still can't seem to ...
18
votes
2answers
523 views

What does selecting an OS in VirtualBox actually do?

In the setup process for a new virtual machine, VirtualBox presents several different OS types and versions to choose from: I'm curious as to what VirtualBox actually does when you select an ...
17
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7answers
1k views

What's better a better VM app: VMWare, Parallels or Virtual PC [closed]

From a Windows developer's perspective, which VM application is the best? Why?
17
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3answers
13k views

Dedicated mouse and keyboard for a virtual machine, is it possible?

Let's say I have a PC with two monitors atached. I'm running e.g. Windows Vista natively, and start up a virtual Ubuntu PC. I change to fullscreen mode so that on one Monitor, I see my Windows ...
16
votes
2answers
2k views

Can I “transfer” my Windows 7 license to a virtual machine running on the same computer?

I've read the blog post on license transfer, but I'm not clear in the case where I already have a licensed, activated copy of Windows 7 running on my PC but want to move that license to a VM running ...
16
votes
4answers
628 views

How does virtualizing differ from emulation, in terms of structure?

Someone told me that a virtualizing program like VirtualBox does not work like an emulator does in the sense that it doesn't emulate registers and uses the actual ones for the virtualized data that ...
16
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4answers
4k views

Which virtual machine can boot from USB drive?

There are any desktop (not hipervisor) virtual machine software able to boot from USB drive? Which one and how?
15
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2answers
38k views

Virtual Machine (VirtualBox) — How to access files from the hosting machine?

I have a PC with Windows 7 Ultimate (A) running on it. From within that OS I have VirtualBox running another Windows 7 instance (B). Is there any way for the Windows 7 (B) to access files from ...
14
votes
1answer
9k views

Copy vagrant box locally

I have a vagrant box running on VirtualBox, and I need to make a copy (with all its existing config and data), so that I can make changes on it without affecting the original. The problem is that my ...
14
votes
7answers
14k views

Limiting CPU speed in a virtual machine?

Does anyone know of a way to limit the CPU speed in a virtual machine? Or if there is even a virtualization software that allows you to do this? I am trying to find the minimum requirements for a ...
14
votes
4answers
4k views

Cannot Share host directory with VirtualBox Guest Mint 16 64 bit

Problem When attempting to mount a shared directory from Linux Mint 16 VirtualBox guest OS, I receive the following error: mount: wrong fs type, bad option, bad superblock on hostshare, ...
13
votes
2answers
10k views

How do you add more space to a Fedora (LVM) partition?

In a nutshell, i have a VM that ran out of space. I increased the size of the VM's harddrive to be 4 times bigger but the OS partition is still only using 1x the space. I need to change the LVM ...
13
votes
4answers
10k views

Is it possible to create Portable VM?

I want to know that is it possible to create a fully portable virtual machine using any of the VMWare like products? My objective is to create a virtual machine (XP as guest OS), install some app in ...
12
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3answers
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Virtual Machines vs Cygwin

With the arrival of virtual machine software like VirtualBox, VMWare, Parallels etc., is Cygwin any useful on the Windows platform to give a linux like environment?
12
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5answers
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VMware Workstation: how to reduce .vmdk maximum size

I have a 150 GB disk file (.vmdk, non pre-allocated) where my virtual machine is stored. The file is currently 20 GB, but it is growing everyday, even though I'm not storing anything new in the guest ...
12
votes
1answer
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Can Windows Virtual PC run a 64-bit OS?

I'm running Windows Virtual PC (RC) on a Windows 7 (RTM) 64-bit host. When I create a new virtual machine an try to install 64-bit Windows 7 on that VM, I get "this CPU is not compatible with 64-bit ...
12
votes
2answers
17k views

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?
12
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6answers
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Advantages of using a virtual machine [closed]

What are the pros and cons of using a virtual machine given that I have a decent 64-bit computer with 4GB RAM and 64-bit OS? For example, why should I use a virtual machine instead of dual-booting? ...
12
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6answers
5k views

Does the Virtual PC XP Mode need safety measures?

Does the Virtual PC XP-Mode (or any other virtualized mode) require safety measures, such as antivirus or a firewall? I'm just wondering if the XP-Mode would be a large security loophole, since it's ...
11
votes
4answers
16k views

which file type to install my virtual hard disk in while installing a new machine on virtualbox?

I got some options like VHD, VMDK, HDD, and VDI is there a file type that is most commonly used and is supported by most other virtual disk software?
11
votes
7answers
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Getting a VMnet0 error in VMWare workstation after updating host computer from Windows 8 to 8.1

Yesterday, I updated my computer from Windows 8 to 8.1. I have VMWare Workstation 10 running Windows XP on this computer and prior to the update I had no issues connecting to my network. However, ...
11
votes
4answers
13k views

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 ...
11
votes
2answers
3k views

Windows 8.1 VM Thinks it's on a Touchscreen

I'm running Win 8.1 on an OS X system via VMware Fusion. I frequently get the "helpful" tips to swipe from here or there to do this or that, which of course I can't do. In addition, many sites force ...
11
votes
2answers
19k views

How can I USB boot a VM in VMWare Workstation 9?

How can I boot a VM off USB in VMWare Workstation 9? I don't see the USB I have attached in the bios boot order. It's clearly attaching before boot, as this shows up before the VM even starts ...
11
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10answers
4k views

I want to virtualize my workstation (Tier 1), Looking for Bare Metal Hypervisor for consumer grade components

I find myself in this similar bind at least once a year. The bind whereby I'm either upgrading a motherboard, or an OS hard drive. It drives me crazy to have to reinstall Windows, Visual Studio, all ...
11
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2answers
6k views

Where can I download virtual machines for VirtualBox?

What are the alternatives to VMWare's Virtual Applicance Marketplace?
10
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5answers
3k views

Does Android or Java use more power since it's running on a virtual machine?

Since Android applications run on a JVM (Dalvik VM) which is basically a virtual processor, and every virtual instruction has to be mapped to the underlying chipset's native instruction, does this ...
10
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3answers
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Is there free VM software for Mac?

I've seen Parallels running Windows and it's pretty darn good. But before I go and spend over $100 dollars, are there any free VM apps on the Mac that are up to speed?
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7answers
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Should I defrag the hard drive running on a Virtual Machine?

I know that there is no point (in fact it is a bad idea) to run Defrag on an SSD. What about a virtual machine running on an SSD, should I defrag it's hard drive since it is basically accessing the ...
10
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4answers
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Can I use one virtualbox disk for multiple machines?

I'm not sure what search term to use and skimming through the VirtualBox manual didn't help me either, so I ask my two questions here... My setup is this: PC with dual boot into Windows 7 and a ...