A virtual machine (VM) is a guest Operating System running in a completely isolated environment within a normal host operating system. Modern virtual machines are implemented with either software emulation or hardware virtualization or (in most cases) both together.

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Running windows programs on linux via VM or PlayOnLinux?

I have Linux Mint 17.1 Cinnamon edition installed and, till now, I used PlayOnLinux to run a windows program in Linux. Browsing on the internet, I noted it is really simple to run a program by using ...
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19 views

Modifying files inside a snapshot (qemu img file)

I have taken a snapshot recently to assist me build VMs quickly with the operating system I desire (through virsh), however, every time I build a VM, I would like to modify few files inside the img ...
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Is there a way to emulate a wireless card in qemu / kvm?

Is there a way to emulate a wireless card in qemu / kvm? Or is there no point to this? Is it considered just another interface?
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Map a Linux VM's block device to its vmdk file on the vmware datastore

For development and staging purposes, I must frequently create clones of individual virtual harddisks (vmdk container) and move/deploy them into some other system. While I have been able to hack a ...
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virt-manager error “format=dir: 'dir' invalid format” when creating qemu VM with ISO

This is virt-manager 1.0.1 on Fedora 20. The server has libvirt 1.2.13-1, qemu 2.2.1-2 on Arch Linux. Go to File -> New Virtual Machine. Select Use ISO Image to install from then browse for it. ...
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17 views

Copy& Paste Fedora and Virtualbox CentOS7

I want copy text from Fedora 21 and paste to Virtual box with CentOS 7 how can I do that?? I change in Virtual box settings Shared Clipboard and Drag'n'Drop to bidirectional Thanks for help, ...
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25 views

malloc(): memory corruption on Oracle Virtual Box [on hold]

I have a code which run great on an OpenSuse laptop, but I get a malloc(): memory corruption error when running it on windows via OpesnSuse installed on Oracle Virtual Box. Is there a setting in ...
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1answer
20 views

Mount host directory in a virtual machine

I have a directory on a system which is the host for a virtual machine. I want to make this directory accessible from the guest of the virtual machine. There are some way I can think of, packing the ...
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2answers
34 views

Add virtual bridge without the loss of networking?

There is a dedicated server without KVM-over-IP support. The server 'owns' two IP addresses, and one of those is used for eth0 at the moment. The user needs to add a virtual bridge, in order to ...
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10 views

virtualbox error: Callee RC: NS_ERROR_FACTORY_NOT_REGISTERED (0x80040154)

The last step of creating a virtual machine says Failed to create a new session. Details: Callee RC: NS_ERROR_FACTORY_NOT_REGISTERED (0x80040154) This error message shows up on terminal ...
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22 views

virtualbox can not create new virtual machine

I'm try to make a new virtual machine but virtualbox have this error in end step : Failed to create a new session. Callee RC: NS_ERROR_FACTORY_NOT_REGISTERED (0x80040154) and in terminal this shwn ...
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39 views

Why port forwarding does not work in QEMU? [closed]

How to redirect port 5555 of Host OS to port 80 of Guest OS? Host OS: Debian Jessie 64-bit Guest OS: Windows XP SP3 32-bit I'm using the following commands: qemu-system-i386 -enable-kvm \ -name ...
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1answer
34 views

Getting “Protocol Error” when trying to create a symlink in Docker

I'm trying to setup a symlink, using the command ln -s /var/www/data/cache/widget/overlay/ /var/www/public_html/images/overlay but it outputs ln: failed to create symbolic link ...
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1answer
13 views

Is there a easy-to-install distribution with all the necessary tools to compile (make, autotools, etc)?

I'm working on a workstation without root privileges. Since I need some tools I cannot install directly, I wish to put them in a vm. The problem is, I cannot connect to the repositories from the vm ...
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42 views

Virtualization on Intel Edison

I want to do virtualization on the Edison. (Edison has vt-x.) On Yocto linux there isn't anything in the repo that is useful. On Ubilinux there is KVM but there is no kernel module in aptitude package ...
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1answer
27 views

Install mail server in VM

I have a Intel NUC with an i3 processor running the latest Mint version with the Cinnamon desktop and already installed some basic services (Apache, MariaDb, ownCloud etc). The next step would be to ...
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1answer
145 views

kvm virtual manager connection failed

I installed kvm package in the centos7 i am getting this problem how to solve this. full error is here Unable to connect to libvirt. no connection driver available for qemu:///system Libvirt URI ...
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Prioritize virtual machine bandwidth

I installed a Windows Server 2012 virtual machine (VM Ware Workstation) on my Debian server that I rented (to which I have SSH access only, and which is in another city with over 1 GB bandwidth) to ...
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72 views

Comparison between: Linux host Windows guest vs Windows host Linux guest vs 2 dedicated machines w/ KVM switch [closed]

I have the conflict that I do most of my work, software developing and data analysis, in Linux but there are a few applications I have to use which do not run well using Wine (specifically MS Word and ...
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40 views

Error installing Ubuntu on VirtualBox

I'm trying to install many different versions of Ubuntu (12.04/14.04, amd64/x86, server/desktop, etc.) on VirtualBox 14.3.26 on OSX 10.10 and I'm getting the following error: [ 0.000000] Fast TSC ...
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1answer
60 views

Configure KVM/QEMU with TLS?

New to virtualization and kvm and I have a problem when i try to create a virtual machine with spice: virt-install --name Windows-7-x64 --ram 2048 --disk path=~/kvm/images/win7.img,size=50 --vcpus=1 ...
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33 views

Oracle virtual box share folders when executing oracle command

I'm using Oracle Developer Days virtual box, which is a Linux distribution by Oracle for development environments (link). Not sure what distribution is it, but in case it was relevant: ...
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1answer
330 views

Problem runing vmPlayer on fedora 21

First of all: Hello :) And then: After install the program and execute vmPlayer request the kernel headers to recompile it (I guess), after that vmP install the virtual network device, at this point ...
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45 views

Running Mac OS X under KVM/QEMU

Note to be removed in the future, so as to avoid confusion from answerers and mods edit: Forgot to add in the note, if anyone thinks this is the wrong stack-site to post this, please comment on why, ...
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46 views

How can I configure multiple tap interfaces for a single KVM virtual machine

I am trying to setup a VM using Linux KVM for a F5 BIG-IP VE deployment (used in a lab) ...
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1answer
14 views

Boot to non bootable disk using Openfirmware

I tried to virtualize (VIOS partition) Debian 7.8 on IBM 9133-55A (powerpc) server. For some reason both yaboot and grub failed to install on the virtual hard disk. Now I want to start the kernel ...
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1answer
209 views

docker - how to run x desktop in a container?

I'm trying to set up my Linux machine to run multiple guest OSes, one of those being a Windows VM, and another a Linux container. The goal here is to prevent me from messing up the host system, while ...
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1answer
36 views

Arch Linux openSSH frequently drops connection

I'm running a VM using Oracle's VirtualBox. The OS is the latest version of Arch, 64-bit. For some odd reason, every so often (frequently enough to be very annoying and making it almost impossible ...
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1answer
217 views

Linux GPU Pass-through Virtualization - Verify wich component causes trouble

GPU Passthrough Virtualization with KVM or VirtualBox For a research project I need to passthrough a PCI GPU from a Ubuntu Host to a Windows 8.1 guest. We need to test a certain setup, where the ...
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1answer
39 views

Resolve Host's IP on VM

I have kind of tricky situation. I have monitoring tool where all my hosts and their VM's (with IP's and so on) are listed. But what I need is to resolve on which host(need it's ip or hostname) this ...
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2answers
43 views

Minimal virtualization environment

I'm using a virtual machine running Windows for development purposes inside a Ubuntu host (I also use the Ubuntu part for my regular activities, but not both at the same time). As I need to compile on ...
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17 views

Xen ERROR Couldn't find xen kernel for Ubuntu tree

xen-4.2 running on server with multiple CentOS running guest, But when i am trying to install Ubuntu i got following error. How do i install Ubuntu on CentOS Xen Server? [root@example ~]# ...
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64 views

Converting .vhd file to .raw - File is too small and does not boot

I have a Hyper-v .vhd file I am trying to convert to .raw for Proxmox. However every time I convert the size is less than half of the actual disk space used and when I import it doesn't boot. I ...
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1answer
20 views

Changing the default resolution with a virtual machine?

I'm using VMware on windows to run Knoppix but the default resolution is too small and changing the resolution each time I load it with su xrandr is annoying. Is there a way to change the default ...
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1answer
29 views

what is the value for setting a hostname in installation of oracle enterprise linux r6u5 should have?

I am installing oracle linux r6u5 for my personal use in vmware workstation. While going through installatio i came to a point where I have to enter hostname, format specified init is ...
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59 views

No cursor/caret in Linux VMC under Windows Hyper-V?

I have just installed CentOS-7, Minimal Installation, into a Hyper-V VM under Windows Server 2008 R2. When I Start the VM from Hyper-V Manager it opens a window it calls Virtual Machine Connection, ...
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110 views

(virt-manager:4796): Client failed to connect to the D-BUS daemon / Unable to connect to libvirt

I would like to boot and run Windows 8 with kvm or xen while I'm running Debian Wheezy. Actually I have installed Windows 8 on the external USB disk and Debian Wheezy on the hard disk sata. I'm tryng ...
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1answer
157 views

Question about CentOS and KVM virtualization and PCI Passthrough

I want to replace Windows Server 2012 R2 and Hyper-V on my homeserver with CentOS and KVM. My plan is to virtualize one Windows 8.1 machine and several smaller Linux machines like on Hyper-V, there is ...
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1answer
92 views

Using of qemu-system-x86_64 with key -enable-kvm on VirtualBox

I have windows 7 as host. I launch virtualbox with ununtu 14.04 on my Windows 7. I try to launch debian inside Ubuntu: qemu-system-x86_64 -enable-kvm -hda disk.img -boot c -m 256 -localtime. Another ...
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1answer
25 views

CentOS Black Screen after 4+ hours of indexing

I am running a CentOS virtual image on virtual box. It has liferay and solr installed on it and I am trying to index a Lar file that is 50+ MB of metadata. This is estimated to take more than 12 hours ...
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21 views

VirtualBox state suddenly SEEMs to have been restored to an earlier time

I have CentOS 7 installed on my Windows 8.1 VirtualBox, and file-system sized 30Gb. It worked fine until this morning, then the storage became full (due to Downloads and Projects). I tried a tool ...
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2answers
30 views

Cloning a drive larger than your own

I made this nice backup system to turn drives into vdi's and put them on our network share. Then the next day my boss walks in with 20 new machines to replace our old ones, they have 2TB drives. How ...
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54 views

Linux Desktop VDI from thin client

I checked VDI Solutions Like VMware Horizon, Citrix Etc. all gives Windows VDI. Is there any solution I can load Ubuntu Desktop Or Centos Desktop image from any thin Client
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1answer
84 views

Unable to connect to internet from Centos VM

I am using VirtualBox 4.3, I have installed centos 6.3. I have two adpaters attached. 1) NAT 2) Host-Only I want to be able to setup a cluster of 3 machines which can talk to each other and also be ...
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1answer
84 views

SSH to a virtual machine

I recently installed a Linux (Mint 17) virtual Machine on a Windows 7 PC. In order to be able to SSH to this virtual machine, I had to define a few rules and redirect ports as explained in other posts ...
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65 views

Unable to get kickstart file from locally hosted http

I'm trying to get a vm up using a kickstart file. However, whenever the virtual machine initalize, it says it is unable to located the kickstart file from the location provided. Code to build vm: ...
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453 views

What are benefits and downsides of unprivileged containers?

The technical explanation of what is unprivileged container is quite good. However, it is not for ordinary PC user. Is there a simple answer when and why people should use unpriviliged containers, and ...
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44 views

Using ks.cfg with virt-install?

I've been trying to get a virtual machine working with a cfg file on centos but unfortunately, I'm getting the error that ks.cfg file does not exist. Below is the command I ran to enable the VM. ...
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46 views

Authenticating a virtual machine against a git server

I have a CentOS 7 VM hosted on a Scientific Linux machine (Both branches are Red Hat). I'm using docker as the SW to emulate CentOS over SL. Communication between both is done through a bridge (a ...
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61 views

CentOS 7 boot hagn in VmWare

I have installed CentOS 7. It was working fine until today that it hangs. After several initial lines of ...driver cache write through... it goes to the next black screen with a _ keeps flashing. I ...