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

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Network Isolation [on hold]

I'm attempting to set up two completely disjoint, compartmentalized networks (what's the correct term for this concept?) for a client. To this end, I've acquired several static IP addresses from the ...
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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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2answers
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Why is the dir command not working?

I can see that the file is there and I can mount it with virtual clonedrive and play it with powerdvd: But windows can't find the file: C:\>dir dead* Volume in drive C has no label. Volume ...
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3answers
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VT-x/AMD-V hardware acceleration is not available on your system

While installing an OS, I am getting an error similar to: VT-x/AMD-V hardware acceleration is not available on your system. Certain guests (e.g. OS/2 and QNX) require this feature and will fail to ...
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1answer
3k views

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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1answer
22 views

How data transfer happens between two VMs which are hosted on the same host?

I would like to know about How data transfer happens between two VMs which are hosted on the same host? is it through the router or any other medium (like virtual router)?
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How to map a symbolic directory link to different directories based on user id

Is there any way to a map a symbolic link directory to different directories based on the user id in Linux. For instance if a user X executes cd /var/www/html/ then his/her directory gets changed to ...
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2answers
8k 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 ...
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1answer
18 views

How do I attach a physical DVD to a Hyper-V machine?

I have Hyper-V running on Windows 8.1 host and now I need to install an operating system on the virtual machine. My operating system is on a physical DVD in a USB DVD drive attached to the physical ...
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1answer
69 views

How to avoid CRITICAL_STRUCTURE_CORRUPTION errors with VirtualBox inside VMWare

I have the same setup as described here: http://stackoverflow.com/questions/17175696/running-vagrant-inside-vmware-vm Now I'm frequently getting BSOD with a CRITICAL_STRUCTURE_CORRUPTION error and ...
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Citrix Xen Server VDI does not exist after VM reboots

I installed Citrix Xen Server on machine and Xen Center console on my windows box. I made some virtual machines on the server but for some reason when I reboot the VM, it would become unavailable. I ...
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qemu: How to use resolutions > 1024x768 in Windows 8(.1)?

In previous Windows versions, I was able to get higher resolutions in qemu/qemu-kvm by passing the -vga std or -vga vmware command line parameters. However, when I try the same for Windows 8 (and ...
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Can PXE boot of Hyper-V VMs be disabled? [migrated]

Hyper-V virtual machines have the ability to PXE boot. Obviously, PXE boot raises some security concerns. The problem is, unlike a typical physical machine's firmware, there isn't an obvious way to ...
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2answers
2k views

VMware workstation windows host shared folders issue

My laptop is a Linux mint powered host and a windows 8 guest via VMware Workstation. Yesterday, I get the bad and stupid idea to upgrade my windows 8 to windows 8.1 final release, using the Installer ...
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32 views

How to change the network where the virtual machine is connected to, in Vmware ESXi with Perl in Linux?

Can anybody answer that how to change a VM's network with Perl? I would like to periodically change the network where the VM's nic is connected. Thanks
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1answer
24 views

can't share internet connection with virtual machine

I've received a cloud test-server and i'm trying to test virtualization (i dont have any experience with virtualization whatsoever) ... I have a windows server 2012 standard, and have a vm running. ...
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3answers
4k views

Mac OS X Server 10.6.6 “disables” CPU in VMware Fusion

I installed Mac OS X Server 10.6.0 in VMWare Fusion the other night and it worked perfectly, until I ran Software Update. I upgraded to 10.6.6 through the combo updater, and now when I start the VM it ...
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1answer
33 views

PC to virtual machine [duplicate]

Currently I'm moving from old PC to new one. I have windows 7 installed. I'm planning throw away old PC, but before that I would like to have possibility to run old PC operating system just in case I ...
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33 views

What are the differences between Cloud Virtual Machines and Virtual Machines on a computer?

Google has a service that allows you to create Virtual Machine on his Cloud. There are many Virtual Machine Types like Browsers (StackBrowsers), Mobile Phone, Operating Systems. You can use the Cloud ...
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VT-x on Asus B85M-E motherboard

I have moved from Intel motherboard to new Asus B85M-E one. Now I'm trying to run my old virtual machines I have installed on Intel motherboard and can't run 64 bits systems. While running Linux ...
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24 views

No VT-X support for Intel i7-4702MQ as required by a virtual machine ? How to enable?

I've recently bought a brand new machine from Clevo. It has the i7-4702MQ CPU from Intel and should be used for development, where sometimes a virtual machine is necessary. However, I can't seem to ...
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6k views

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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37 views

Server-Mainboard - use iGPU instead of onboard Graphics for desktop virtualization

I'm assembling the hardware for a home server and have following question: At the moment, I've chosen the Asrock E3C226D2I as Mainboard. It has an onboard "Graphics Card" by Aspeed, AST2300, but only ...
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2answers
7k views

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 ...
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1answer
22 views

How do I virtualize my windows drive in ubuntu?

I am running a dual boot system. In parallels on my mac, I am able to view my bootcamp partition live in a virtual machine. Is there a tool to do this in ubuntu?
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Can user-mode Linux be compiled and run on UNIX systems?

e.g. on NetBSD or Solaris? Or does it require exclusively Linux-specific system calls, virtual filesystems, etc.? Also, if it's currently limited to Linux, what changes would be required to port it ...
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Could I access a blocked website via a virtual machine if the host OS has the web address blocked in its hosts file?

I was going through this Net Nanny article that mentioned about the various ways its web filter could be bypassed by kids. Among other methods, I saw this: One way that teens can get around the ...
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1answer
27 views

Can I run my desktop on a bare-metal VM layer to swap between operating systems?

I'm running CentOS as my primary desktop, but I need to be able to use Windows and Ubuntu from time to time to test things on those. As I don't have any extra hardware immediately available, I could ...
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1answer
26 views

Can I pass disks through Hyper-V to a Linux VM for md RAID on any hardware?

I toyed with the idea in the past few months of virtualizing a workstation machine (with ESXi/Xen/etc), basically having it run some very basic server stuff behind the scenes; this was more of an ...
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1answer
22 views

Creating Portable Apps from installed Programmes

I want to make an existing application on my laptop portable. From what I read, there are a number of applications that will do this but they all require that the application is a first-time install. ...
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1answer
27 views

Sharing a VirtualBox image … clone, export, or copy?

I'd like to share a VirtualBox image with other developers, similar to this question: How to share a VirtualBox image? There seem to be three basic answers to that question: Copy the entire VM ...
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2answers
180 views

How can I run OS X on a virtual machine in OS X? (Use case: testing software on different OS versions.)

I'm currently running OS X 10.8.5 and I would like to set up a virtual machine that runs OS X 10.9. (The other way around would be fine too. I would upgrade to OS X 10.9 and run OS X 10.8.5 in a ...
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40k 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 ...
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1answer
45 views

How much RAM should I put aside for ubuntu virtual machine

I currently have windows 8 in my laptop with 4 gb RAM.. I recently installed the virtual machine of ubuntu. Now I need to run a tool whose memory requirements are as follows : 1) Atleast 5 gb RAM 2) ...
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2answers
723 views

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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Lenovo T400 virtualization fails despite set in BIOS

T400 virtualization fails despite set in BIOS I found this post http://forums.lenovo.com/t5/ThinkPad-Edge-S-series/Hardware-Virtualisation-on-E520-with-i5-2540M-2-6GHz/td-p/608633 when I searched on ...
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1answer
57 views

Install Windows Server 2012 R2 in qemu VM

I'm trying to install Windows Server 2012 R2, but right after loading Windows files I'm getting: Your PC needs to restart. Please hold down the power button. Error Code: 0x0000005D My command is: ...
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Open VHD with Windows

I have a fully patched Win7 PC with XenCenter installed and VHD files registered to XenCenter. As of now, I am unable to open a VHD file on this PC - whenever I open it in XenCenter, it wants to ...
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533 views

Multiple Linux distributions return “Fast TSC calibration failed” when running on Hyper-V

Client Hyper-V on Windows 8.1 Pro host with Intel Core i7-4800MQ processor. Several Linux distributions, including openSUSE and Kali Linux, return the following error message when booting up in a ...
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2answers
8k views

What does “Virtualization” in the Task Manager on Windows do?

If I open up the list of running processes in the Task Manager on my Windows Vista. Then I can right-click on a process and chose "Virtualization". Not much happens after that. What does this really ...
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1answer
129 views

How should I configure Xen to allow multiple different IP ranges in the domUs?

I'm trying to get Xen running in a setup where the domUs have a completely different IP than the dom0 (not in the same network range). This answer got everything working within the same /24 range, but ...
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1answer
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Virtualize a server into a vm image for testing

I need to run some tests before deployment on an environment as close to my production server as possible. How can I virtualize the current installation into VM image to be able to run some of my ...
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2answers
7k views

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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Unable to browse to certain sites

I have a few guests on a XenServer host, and some sites ( both SSL and non SSL ) cannot be accessed by the XenHost and the Guests. Other machines on the same network can access these sites just fine, ...
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Virtualbox, Windows 7, how do I remove “ATA Device” from msinfo32 and Device Manager?

In Virtualbox, you can change the hard drive or DVD name, manufacturer, serial, etc. (Virtualbox manual, 9.9.2.). However, the friendly name always ends with "ATA Device", after the normal formula of ...
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iptables syntax to forward remote desktop requests to a virtual machine on CentOS host

I can rdesktop into a VM running Windows XP hosted on my CentOS 5.4 machine from the hosting machine and work just fine using the private address (192.168.122.65), but I now need to allow remote ...
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2answers
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Can't install Guest Additions using VirtualBox, Ubuntu guest OS, Win7 host OS

I'm new to VirtualBox and Linux. I've set up VirtualBox 4.0.4 on Windows 7. Successfully created a virtual machine running Ubuntu server 10.10 64 bit. I'm trying to set up Shared Folders. Prerequisite ...
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Nested virtualization on (OpenStack on ESXi on Windows)

For the last few weeks I have been reading a lot about OpenStack, Cloud Computing, virtualization, VMware tools and I have decided to try it. I would like to install, configure it and try it to see ...
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2answers
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Output CMD command line to file does not work on Windows XP VM

I install a Windows XP virtual machine on Window 7 using VirtualBox. I run a command within the VM: ping www.google.com > file.txt but no result found in the file. It is the same with all other ...
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ScanDisk (ChkDsk) on shared folders on Virtual Machines: is it needed?

Scenario: Windows XP SP3 running on Virtual Machine (VM) guest (VirtualBox). A host's shared folder, say d:\VMSharing. The guest VM has some file(s) in use from that shared folder (so he is ...