A virtual machine is an emulation of a guest operating system, running on virtualized hardware within a host operating system.

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VMWare Player presses and holds random keys

I am running Windows 8 and VMWare Player with a bunch of VM ranging from Windows, to various flavors of Linux. The issue that I am having is that what seems like every 2 minutes, or when I switch ...
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268 views

Black screen in the beginning of installation process of Debian 7.8 on Hyper-V on Windows 8.1 Pro

I am trying to install Debian 7.8 using an ISO image "debian-7.8.0-amd64-netinst.iso" on Hyper-V. When the VM is running, I see a graphical start screen: When I choose the first command, I get ...
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1answer
91 views

How to connect to wifi using Windows 8.1 preview in a Oracle VM VirtualBox virtual pc

I've been thinking about upgrading to Windows 8.1 but wanted to test it first in a virtual pc I made using Oracle VM VirtualBox. I downloaded the Windows 8.1 preview software and so far it works well. ...
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11 views

spicy-client assertion failure after computer crash

I usually use spice-client to connect to remote VMs without any problem. Today during usual work my pc freezed (I am strong confident that this is not due to spice) and forced me to brute shutdown. ...
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1answer
55 views

The smallest Linux that can support VMWare Workstation and networking [closed]

Setting aside the hardware, this is what I need to do: install the smallest possible Linux, but it can support this three features: Connect to a network using Ethernet Firewall Support VMWare ...
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19 views

VirtualBox: create a serial port bridge to the same VM

I'd like to make a bridge between Serial Port 1 and Serial Port 2 on a VM. Practically this would route all data from VM Serial Port 1 back to VM Serial Port 2 so that an application listening on ...
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1answer
209 views

Virtualbox vm goes into aborted state whenever Macbook goes to sleep

I'm running Yosemtie OSX (10.10.2) and Virtualbox 4.3.22. Whenever my macbook goes to sleep, my vm goes into "aborted" state, and does not recover (i.e. has to be manually restarted/booted). Looking ...
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34 views

why in Linux VM like vmware and XenServer, physical id > the number of cores in /proc/cpuinfo

This was only observed in Linux virtual machines. In /proc/cpuinfo, the physical id could be very large, exceeding the number of cpus. For below example, 4 core systems but the physical id is 13. ...
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16 views

Allocating server CPU cores to virtual box guests for heavy compute, light i/o load

Please share your recommendations for allocating CPU cores to guests on big iron. I am asking basically this question 6 years later: Is there an optimal setting for the number of CPU cores exposed ...
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39 views

Where are Xen guest config files stored?

I'm new to Xen stuff. I have a XenServer 6.5 running, with XenCenter and a Debian installed as a PV VM. I'm trying to setup the extra security now so I don't have to learn about it after I've been ...
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78 views

Why VMware Virtual Ethernet Adapter for VMnet1 not shown in Network Connection?

VMware Virtual Ethernet Adapter for VMnet1, VMnet8 and Bluetooth do not show up in Network Connection's. Only the Wireless Network Adapter is shown! What could be the reason for this? Thank you for ...
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39 views

Running device firmware on a computer

I was wondering how I would go about running device firmware in a virtual machine on Windows 7 or some other way on windows 7. I am specifically thinking of running the Broadband-Hamnet firmware for ...
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26 views

Ubuntu VirtualBox Virtual Machine won’t power on after power failure

I have an Ubuntu virtual machine hosted on a Windows OS. I lost power while the virtual machine was on, and the host OS crashed. After rebooting the host, I could not power on the Ubuntu virtual ...
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1answer
33 views

how to use isc-dhcp-server in place of router dhcp

i have a virtual Debian installed on my VMware running on win 7 64 bit , i am using a bridged connection for my virtual machine , i installed isc-dhcp-server and changed the /etc/dhcp/dhcpd.config ...
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11 views

2nd monitor absent in VirtualBox

I'm using VirtualBox but cannot get a second monitor for my guest. Why not? As you can see in the screenshot, the Win7 guest actually thinks it has two monitors, but there is no window for the second ...
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43 views

x86 live image on a x64 processor

I have a live image of ubuntu, and I will be using it for programming. It came with a book, and the book mentions that it has to be used on a x86 based-processor. I have an AMD64 processor, so my ...
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54 views

virt-install fails to start in centos 6.6

I am trying to host virtual KVM machines on my server. Specs: CentOS release 6.6 (Final) processor : 11 vendor_id : GenuineIntel cpu family : 6 model : 45 model name : ...
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1answer
55 views

Does Upgrading VirtualBox affect guest OS activation (Windows 7)

I am running a retail edition of Windows 7 as a guest OS in VirtualBox. Windows 7 activation is sensitive to hardware changes. In the case of a virtual machine, the hardware is mostly emulated. In ...
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61 views

How many VM's I can create and share CPU cores on 24 core CPU?

I have a server that has 2 (CPU) - 24 cores. Is there a limit how many VM's I can create and assign CPU's? Ex: Is there a limit that, I can only create 6 VM's that have 4 CPUs each? or 12 VM's with 2 ...
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1answer
126 views

Assign static IP to VMware Player guest on host-only network

I have a VMware guest (Ubuntu 14.04) on a Windows 7 host that has a host-only network adapter (the 192.168.59.xxx address range), and every time I reboot the machine, it gets a new IP address assigned ...
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37 views

How to tell virtualbox how to boot from cloned direct access partition

I've managed to paint myself into a corner. I have a ubuntu machine with a virtualbox windows VM on that I spend about 4hours working in each day. I read up online that having direct disk access for ...
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95 views

Using a Bluetooth USB Device on 2012 Hyper-V Host or VM

i need to be able to use a USB bluetooth stick on either a Windows Server 2012 R2 Host OR on one of its virtual machines. The VM could be a WS2012 as well or a Windows 7 OS. I have 2 problems - ...
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46 views

Some audio devices (PCM_in) could not be opened

Some audio devices (PCM_in) could not be opened. Guest applications generating audio output or depending on audio input may hang. Make sure your host audio device is working properly. Check the ...
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50 views

VirtualBox errors out saying it needs more free disk space when space is clearly available

At my work environment we use VirtualBox for testing. It is set up as Windows host and RHEL 6 as client. Now during testing sometimes the error message popping up which says: You need to free ...
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33 views

Unable to connect to internet from Centos VM

I am using VirtualBox 4.3, I have installed Centos 6.3. I have two adapters 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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53 views

How do I test software on hundreds of Windows 7 VMs? [closed]

I want to make a home lab to test software that interacts with hundreds (maybe thousands?) of nodes, all Windows workstations. Each VM will be spun up for testing purposes, then destroyed. Do I need ...
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18 views

Physical processor to virtual processor scaling [duplicate]

If I have a Windows Server 2012R2 with Hyper-V role installed, and the configuration is: 4 processors, Intel Xeon E5-4620v2 and each one is 8 cores/16 threads, can I utilize enough power for ...
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1answer
125 views

VMware Player cannot start a suspended VM from an SMB shared drive, says “Failed to lock the file”

I have a VMware Player VM located in a remote shared folder that resides on a Linux server. On the server side I have set up my file access permissions to the user ID used to open the shared folder, ...
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35 views

Install Windows 8.1 on VirtualBox

I mounted a Windows 8.1 .iso and booted from it. The image below is my issue. I have no idea how to continue. I am trying to install from Ubuntu 14.10.
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33 views

Error when running boot2docker from inside Virtual Box

I get Non existent networking host interface name: VirtualBox Host-Only Ethernet Adapter #2 (VERR_INTERNAL_ERROR) error when I try to run boot2docker from virtual box. Error Details: Result Code: ...
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17 views

VMWare Guest Accessing Host Statistics

I have tried researching this but unfortunately couldn't come across an answer. Is it possible for a vmware esx virtual machine to access statistics about its host machine such as CPU and memory ...
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73 views

How can I remotely connect to VM outside of Internal Network without connecting to Host Machine?

I am running Windows 7 in a VM: The VM was setup using Hyper-V within Windows Server 2012 R2. First, I configured the Linksys router Port Forwarding for TCP 3389 and 3390. To both IP addresses. I also ...
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Why Don't Hyper-V Checkpoints Appear in Tree?

I am running several VMs under Hyper-V. All VMs and Host are Windows 8.1. Something seems to have changed in my system whereby checkpoints no longer appear in the checkpoint tree of a VM. It now ...
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53 views

RDP responsiveness with Windows Server 2012

I have to work in visual studio on a couple of different windows server virtual machines. A couple of machines have Windows Server 2008 R2 and one of them has Windows Server 2012. The client ...
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55 views

How do I get a Windows 8 or 8.1 ISO file for Virtual Machine Construction for free? [duplicate]

Does anyone know where I can get a windows 8.1 or 8 iso file? I want to get a virtual machine so I can mess with the settings for learning. If its on the Microsoft website, that would be preferred. I ...
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365 views

VMware workstation 11 host-only networking with Kali Linux (Guest) and Windows 8.1 (Host)

I've been trying to set-up a host-only network between my Virtual machine Linux (Guest) and Windows 8.1 (Host) to share Internet connection of Linux VM with Windows 8.1 host. the Linux distribution ...
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24 views

VirtualBox on QEMU host?

I have remote access to a QEMU Windows Server 2012 (64 bit) VM with 12 cores @ 2.8 GHz ("QEMU Virtual CPU version 2.0.0") and 48 GB RAM. For a project I wanted to set up a Linux VM on VirtualBox on ...
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1answer
26 views

Oracle Virtual Box current version no option for Win8.1

I'm trying to install the Win10 64Bit technical preview in VirtualBox VM, but I keep getting errors. While digging into this I found online many suggestions to set the Windows version of the VM to ...
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1answer
24 views

VM Workstation Networking

I setup a virtual lab on my windows 7 laptop my windows 7 laptop is getting ip address from my wireless connection. ie. 192.168.1.100 My virtual lab My Virtual DC I use 192.168.2.1 My Virtual ...
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2answers
194 views

Not able to install Windows 10 on oracle virtual box

I have installed ORACLE virtual box in Windows 7 machine and created a VM for windows10 technical preview with the following settings: Guest: iso: Windows10_TechnicalPreview_x64_EN-US_9926 Machine ...
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26 views

Why does my VMware Player Windows guest create all files with executable permissions on Ubuntu host?

I am running Win8.1 in VMware Player 7.0 with a shared folder with my host Ubuntu 14.04 system. Whenever I create or save a file in Windows, it gets the permissions -rwxr-xr-x in the Linux file ...
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1answer
81 views

Why does MS Word save .docx and .pdf files with executable permissions when run through VMware Player on Ubuntu?

I am running Ubuntu 14.04 and MS Word 2013 through VMware Player 7.0. I share files between my guest and host by mounting my home as a network folder in VMPlayer. My problem is that every time I save ...
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129 views

Boot issue with Windows Server 2003 R2 VM that was exported from Hyper-V on Server 2008 R2 and imported into Windows Server 2012

I am migrating some Hyper-V based Virtual Machiness from their current server which is running Windows Server 2008 R2 over to another box that is running Windows Server 2012. I exported all of the ...
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1answer
328 views

I can't access my server on VM (VirtualBox) in centOS 7

I do install VirtualBox on Windows 7, and create a virtual machine, which install centOS 7. Then in centOS7 perform the installation of CollabNet Subversion Edge, following this information as a guide ...
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84 views

Easy way to save and restore Virtual Network Editor settings in VMware Workstation

I am using VMware Workstation 10 and have set up my Virtual Network Editor to use multiple NICs. Due to some reason (automatic updates I guess) the VNE loses those settings every now and then. Is ...
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52 views

How can I add ethernet port in CentOS VM running in Parallels?

I have Parallels installed on OS X 10.10, with a VM of CentOS 6.6 installed. Upon installation, eth0 was automatically configured (as a wired connection), and allows me to connect to my wireless ...
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1answer
41 views

How to fix network Connectivity of guest VM moved from one machine to another?

Upgrading my PC, I am moving everything I had in the old one to the new one, including my VMWare Workstation VMs. In my older PC, I had VMWare Workstation 6.5 installed. In my new PC, I have VMWare ...
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50 views

Openvz vswap memory usage (Wrong memory on Virtualmin/Webmin )

I am running OpenVZ on my dedicated server Here is output from host(dedicated server) total used free shared buffers cached Mem: 15604 15228 ...
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32 views

Compare two instances of Windows based on their state (Hashing)

I don't know how to better ask this but let me give an example. Suppose that I install a Windows 8 and do some updates, install some software, and copy some files. Can I now get a hash code for the ...
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57 views

How can I emulate Windows Server 2008 R2 with QEMU? / Cannot virtualize Win2K8 R2 using QEMU on Windows Host

I have used precompiled QEMU 2.2.0 (64-bit version) to emulate a PC running Windows Server 2008 R2. The Host OS is Windows 8.1 Enterprise 64-bit, and my CPU doesn't support Intel VT-x so I can't use ...