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

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Virtual Machine or a Cloud Server without IP Address?

Is it possible to create a virtual machine or a cloud server on a dedicated server without IP address, for example with a hostname, or something else? The reason I'm asking this is because I want to ...
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VT-x is enabled, but it's not detected as such

I preemptively reinstalled Windows 7 Ultimate x64 recently, but I lost the ability to use VT-x in the process. Namely, I was trying to get HAXM to work, but I will surely need it later for VirtualBox. ...
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17 views

linux KVM Virtualization: USB cameras and nvidia graphics cards with dual display

I wonder if is possible to create with KVM guest machines (Windows and Linux) they can use 2 monitors (in desktop extension), USB cameras and graphics cards like Nvidia
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29 views

Operating system not found in virtualisation

I have download an image for a debian computer. But if I will startup that image with vmWare I get the following message: Can anyone help me? Thanks.
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2answers
31 views

How do I use a prebuilt virtual machine?

I downloaded prebuilt virtual machines of Windows 7 and XP. I'm trying to run them in VMware, but I don't know how to use a prebuilt VM. How do I get them to work?
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12 views

Error starting a VirtualBox instance inside an Ubuntu VirtualBox instance

I am trying a Microservices demo that uses Vagrant to start up a VM and deploys software to the started machine. Because the demo is set up for Linux and I am using Windows (8.1 Pro), I am running ...
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18 views

Preparing a Windows 7 x64 installation for Hyper-V hosting

I'm moving to Windows 10 but I need to keep my old Windows 7 installation usable via Hyper-V host. I tried connecting a virtual machine to the old Win7 disk but I got a 0x7B STOP error (inaccessible ...
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26 views

Why KVM is called Kernel-based Virtual Machine?

I want to know how KVM stands for Kernel-based Virtual Machine. Is there any reason behind? Is it due to "OS" work on kernel position i mean ring 0 or Level 0? Is my assumption is correct or not? If ...
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18 views

The virtual machine could not be started because the hypervisor is not running

I can not start Hyper V virtual machines. I am getting following message: [Window Title] Virtual Machine Connection [Main Instruction] The application encountered an error while attempting to change ...
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17 views

Deleting partitions [meant to be dual-boot] or a fresh re-install [Virtualization]: Centos 7/Win7

I appreciate any advice given to resolve this particular dilemma. The Background: I need to have Macromedia [Adobe] Dreamweaver and as such a copy of Windows somewhere. My main system is Centos 7.1. ...
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19 views

Virtualbox Windows graceful shutdown of guests on host shutdown

I am trying to find a solution to gracefully shutdown any guest VMs running under VirtualBox Windows when the host computer is shut down or restarted. It seems that the safest option would be to ...
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8 views

guestfs-xxxxxx VMs appearing in LibVirt (virt-manager)

I have a KVM+LibVirt based hypervisor running on Fedora 22. I use virt-manager for managing the VMs over SSH. For some reason I see "guestfs-00kxipwaewnkoq92" VMs appearing and disappearing at ...
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8 views

Migrating VMs in VMware Player to VMware Workstation

Is there a way to migrate the VMs created in VMware Player to VMware Workstation ? My PC had VMware Player previously on my personal laptop, and I have 3 VMs created. I recently installed VMware ...
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4answers
729 views

Is it possible to install Windows 10 as the host OS and as one or several guest(s)?

With a single license of Windows 10, is it possible to install the OS at the same time as: The OS of the host machine (the non-virtual machine) The OS of one or several guest system(s) In such ...
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0answers
18 views

If XEN can convert my installed OS to guest OS?

Need to run multiple OS (Windows 7, Ubuntu 14.04, 12.04). Never use XEN before. Just want to check: Does XEN have to be installed on top of some OS? Can it be installed directly on a fresh computer ...
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20 views

Virtualization with UEFI'secure boot feature

I'm interested in the notion of emulating digital signature checks in virtual machines—the host can be booted without hardware-based digital signature checks, which can be moved to the VM, and the ...
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7 views

Networking between two VMs via host

I have two virtual machines in VirtualBox. I would like to do networking between them via my host OS. In this case they should interract only via my os. I tried NAT but I can't ping then both my OS ...
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10 views

Memory not releasing after shutting down vm in Xen-4.5

I installed Xen-4.5.0 on a server with CentOS 6.5(v3.2.30 kernel). All works well except when I shutdown a vm, then xl li shows that the vm's memory is not released and physical memory becomes less ...
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2answers
21 views

How do I open a VM I received in VirtualBox?

A lady "put together a virtual machine" that was supposed to include a certain software and related packages. I was given a folder of files (vmdk, log, vmxf, plist, vmsd, nvram, and png files) and ...
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30 views

Windows doesn't detect virtualization

CPU: Intel Core i3 3220 Motherboard: P8B75-M LX (BIOS version: 1403, final) OS: Windows 10 Education 64-bit Note: I have screenshots including BIOS settings but I can't add because of reputation ...
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4answers
142 views

Force virtual machine to only use VPN connection?

Here's what I have: Mac OS X 10.10 - running VirtualBox and acting as an OpenVPN client. This works just fine on the VPN and is intended to be my host machine. There is also a WiFi connection on this ...
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15 views

How do I compress or compact encrypted virtualbox disk image

As I have created a Debian VM inside VirtualBox by encrypting their partition. So that the OS must be running in an encrypted partition. Although while creating a disk image(VHD), I had given for ...
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149 views

Windows 10 upgrade with hyper-v missing “Local Area Connection - Virtual Network”

I upgraded Windows 8.1 to Windows 10. Prior to the upgrade, I had Hyper-V running, and sharing the wired Ethernet adapter. After the upgrade, all of the virtual adapters were disabled (and named ...
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16 views

Why can't I open applications that I drag and drop onto OS X Guest VM?

I am running OS X Yosemite. I have a guest VM (Yosemite), that I would like to copy applications onto. It has the same appleID as my host VM. I drag and drop the application from the application ...
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78 views

How do I virtualize a physical machine, and be able to put the image back on the real machine?

Can I convert a physical machine running Windows (XP, 7, etc) to an exact copy virtual machine, make modifications on it and be able to put it back on the physical machine if I need it? The OP adds ...
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347 views

Oracle VirtualBox - Unable to update to Windows 10

I'm using Oracle VirtualBox 5 and my virtual Windows offered an Update to Windows 10 today, but it stops saying: VirtualBox Graphics Adapter The display manufacturer hasn't made your display ...
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60 views

Xen VPS with 2 IPs from 2 different subnets

I am new to Xen and I am trying to understand how to add 2 different IPs on the same guest VPS. First, I am going to explain my node setup, which is a physical server with 32GB RAM and 2 NICs on it. ...
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59 views

Running a Virtual Machine and Hypervisor on the same machine

I've got a desktop and a laptop computer. Both run Intel hardware. I mainly do word processing, programming, watching videos and surfing the Internet (I don't play computer games). I would like to ...
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15 views

VM engine that reuses installed OS

I am running a tripple-booting MacBook Pro. It boots between Ubuntu, Mac and Win7 (likely going to drop Win10 on it asap). Now I would like to do tasks in my Mac, my primary OS, while pulling updates ...
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4k views

Operating VirtualBox 5 on old Pentium 4 32bit CPU with 4GB RAM

Trying to operate VirtualBox 5 on old Pentium 4 32bit CPU with 4GB RAM. But spinning up 32bit Linux/Ubuntu VMs is so slow. Have adjusted allocation of RAM and hard drive settings and still too slow. ...
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VirtualBox networking (inception computing)

I am new to world of networking and now I am trying to connect 3 PC`s together. I have windows 7 host that runs Ubuntu64-bit server guest, that runs ubuntu32 server guest. Win7- Host Only network ...
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64 views

KVM or Xen for VGA Pass-through

I'm in the planning phase of setting up a personal virtualization server. One of the virtual machines I want to setup is a Windows box with Steam. Ideally, I want to stream higher-end games to my ...
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5 views

Fault Tolerance in Virtualized Servers

I have read about virtualization though I don't have real life experience. One of the ways to achieve is by installing Hypervisor in a server machine and have management software in admin's machine to ...
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17 views

VPN on guest machine only

I have a Windows 2008 R2 server that does a fair bit of media transcoding, and serves the house via Plex server. I am looking at making a VM guest (windows 7 or 8) that will have a VPN client ...
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22 views

Access files in virtual machine from virtual disk files?

I was using vmware workstation, but I don't have a valid key anymore. I have files and data in there that I need and would prefer not to pay $250 to get a new license. Is there a way to access my vm ...
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80 views

VMware vSphere ESXi 6 and Horizon View 6 with PXE clients

I have used VMware vSphere ESXi server 6 trial with vCenter server and vSphere client 6 on Windows Server 2012 R2 locally and I could successfully get them to work, but I want to go one step further ...
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79 views

Providing 512MB of video RAM with VirtualBox

I'm attempting to use VirtualBox to play a game on a Windows guest machine, running under an OSX Mavericks host with 512MB of video RAM. The game requires 512MB of video RAM (although it doesn't do ...
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68 views

Virtualbox: deleted snapshot, vm won't boot

The problem I accidentally deleted the snapshot file located at <virtualbox-folder>/vms/<vm-name>/Snapshots. When I try to start the VM (which the .vdi file is intact), the following ...
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41 views

Save qemu VM state like in Virtualbox

I am used to the Virtualbox "save machine state" exit strategy, which is a handy way to let the host reboot without shutting down the vm. I recently switched to qemu because of its VT-x in VT-x ...
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130 views

OpenVZ fails on container create (Unable to get appcache tarball name)

I have OpenVZ installed on CentOS 7.1. after i execute vzctl create 101 --ostemplate debian-7.0-x86-minimal i get command /usr/sbin/vzpkg exited with error 8 Unable to get appcache tarball name ...
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39 views

Effective virtualization without VT-d

My configuration: Intel i5 M 460 processor (doesn't have VT-d). 4GB of RAM enough memory on HDD and SSD for everything I need. :D I'd like to make few virtual machine OS which I want run smoothly ...
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46 views

Trying to install PFsense on Proxmox…lost

So I've been bashing my head against my desk for the last couple of hours trying to figure out how to properly set the network interfaces for proxmox. I'm looking to do something really simple where ...
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30 views

How can multiple Linux distros be run simultaneously & equally resourced on screen in a VM?

What is the easiest and/or best way to run several lightweight Linux OS's simultaneously in separate display windows, in a reconfigurable virtual hardware environment, while (and this is important) ...
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19 views

Can I connect to an external-HDD-based Hyper-V VM from any computer?

If I create a VM on an external HDD using Hyper-V, and now want to connect to it from a different computer using Hyper-V on that second computer - Can that be done, or might that corrupt the VM? If ...
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67 views

How to add an additional drive to an existing ZFS RAIDZ-1 in Proxmox?

I've a ZFS installation in Proxmox, in particular a RAIDZ-1 file system, for testing purposes (before going on production with this setup) I've added a new drive to the machine, but I'm blocked on ...
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30 views

Customize and sysprep modern.ie virtual machines say for VirtualBox?

Has anyone done this or know if possible and the steps? MS has VMs for testing IE on modern.ie site. They're clean base images one extract and imports into VM software of choice like VirtualBox to ...
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MAC addresses for virtual machines

As I understand it, MAC addresses are assigned to every physical device by the manufacturer. By extension, how are MAC addresses assigned to virtual machines - for example if I create a new virtual ...
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40 views

how do I copy large datasets between two VirtualBox virtual machines?

I have two separate CentOS 7 virtual machines running in VirtualBox that is installed in a Windows 8.1 host. How do I transfer large amounts of data from one of the CentOS 7 virtual machines to the ...
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30 views

Move physical Snow Leopard installation into VirtualBox

I've got a physical installation of Mac OS X 10.6.8 (Snow Leopard) happily running on my MacBook Pro. I want to move this install (not install a fresh copy of OS X and moving my data, move the extant ...
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44 views

IOV / SR-IOV / MR-IOV for non-network hardware

I've been looking for real-world examples of this for a long time -- mainly because I'm trying to decide whether to restrict my build-options to using only components (chipsets, processors, ...