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

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Error in installing Mirantis Openstack on windows 8.1

I am trying to install Mirantis Openstack on my windows machine(8.1). The entire process i have done till now is: Install oracle virtualbox with extension pack Install cygwin Install procps, ...
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26 views

Run commands on an Ubuntu guest in VirtualBox VM from Windows host

I am working on some coding, and I have an idea that should work but I have no clue how to make it work. I am using Wolfram Mathematica on my Windows host machine to run some code, but I have to ...
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11 views

Oracle VirtualBox Guest additions with Windows 10 technical preview

I've decided to try out the Windows 10 technical preview on a VM. I am using VirtualBox 4.3.20 and my host machine is running Windows 7. I installed Win10 successfully but I am having trouble ...
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1answer
6 views

Linux Watch Memory Command

I am using watch -n 5 free -m command via terminal to watch the memory fluctuate as I run virtual box with a guest that is limited to 4GB of RAM(it allocates 4GB on start of virtual guest). Under ...
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how resources control transfers between host operating system and guest operating system?

can someone explain how resources(CPU, Memory, IO) are managed and controlled by host operating system and guest operating system ?
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9 views

SMB response, STATUS_INSUFF_SERVER_RESOURCES

I have a Windows 7 vm running in VMWare workstation, it has 4 cores and 4 GBs of RAM assigned. Currently 3 clients connect to this windows 7 vm to access a shared folder. I noticed when the clients ...
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17 views

Boot physical partition as a VM

I have a physical Ubuntu partition on my HDD that it would occasionally like to boot inside Windows as a VM for file transfer between Windows and Ubuntu and non-intensive tasks inside Ubuntu. How can ...
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3 views

Unable to get kickstart file from http webserver?

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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32 views

Why is VirtualBox faster than hyper-v

In my work, I spend about 2/3 of my time using windows applications (Office/Illustrator/some bespoke stuff) and the other 1/3 doing software development and data analysis on Linux. When setting up ...
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2answers
38 views

Bridged Networking doesn't work. Host Windows 7, Guest Ubuntu 14.04. Tried everything

it's quite popular problem and I've seen many solutions, but none of them worked for me. I've created virtual machine with Ubuntu 14.04 and haven't changed anything in Ubuntu configuration. With NAT I ...
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1answer
15 views

Virtual Machine on Windows 8.1 without Hyper-V

Is there a way I can install the latest version of Ubuntu on my Windows 8.1 machine without Hyper-V? I do not have Windows 8.1 Pro in order to have Hyper-V. All guides I see on the subject do it via ...
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1answer
14 views

Syncing virtual machines - dynamically allocated or fixed allocation VHD?

When you run a virtual machine that you want to periodically sync, is it generally faster to use a dynamically allocated VHD or a fixed allocation VHD? I'm sure this depends on a lot of factors, ...
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14 views

Can't boot with USB 2.0 enabled [Virtual box]

I need to use USB 2.0 on Virtual box for Windows 8.0, my host is Windows 7. I Installed the virtual box extension pack so I have the option to to this. However, when I enable USB 2.0 I cannot start ...
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1answer
22 views

Centos 7: what is “dracut” and why is it loading? [on hold]

Something happened to my installation of Centos 7, and now when I boot up the VM, it's loading "dracut". How do I fix this so it loads Centos normally?
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1answer
124 views

run windows 10 on oracle vm virtual box, error your pc need to restart

I'm using windows 7 64 bits, CPU: dual core T4500 does NOT have virtualization, 3 Go of Ram. I want try Windows 10 I have download the Iso, Install Oracle VM and set up it, when I run the vm, I see ...
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26 views

Machine is rebooted due to bugcheck “The bugcheck was: 0x000000d1 (0x0021ee81, 0xd0000002, 0x00000000, 0xf7727548). ”&Machine is VM with 2003 OS

Machine is rebooted due to bugcheck. The bugcheck was: 0x000000d1 (0x0021ee81, 0xd0000002, 0x00000000, 0xf7727548). Machine is VM with 2003 OS. Event Type: Information Event Source: Save Dump ...
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1answer
15 views

How can I start my virtualbox instance with the same state?

Is it possible to save a state of a vm in virtualbox, and from then always restart this vm by restoring the state ? My problem, is that the state is deleted after restoration, and I can't restore it ...
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1answer
39 views

Windows 8.1 vs Windows 7 as the guest OS [closed]

For various development and test purposes I'd like to setup a VM running Windows. The host is my workstation that runs on Windows 8.1 x64 with an i7, 16GB of memory and tons of SSD and HDD space. I'll ...
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37 views

Protecting against VM's malicious activities [closed]

I recently got my hands on a brand new server. I decided to install a SolusVM Master on that server, and to run a few VM's using only the OpenVZ template. Everything went totally fine until i ...
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1answer
28 views

Cannot run VirtualBox after crash, acceleration not available

I know that has a lot of topic like this, I've tried them a lot as well but my problem is not solved. My laptop has Core i3 and I used to use VBox just a few days before. When RAM got up to 99% my ...
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2answers
40 views

AntiVirus for OSX running parallels

I'm using OS X 10.10.1 on my Mac. I use Parallels Desktop 10 and VMware Fusion 7.1. I do use windows a lot on Parallels and Fusion (Several Virtual machines). Windows 8.1,7 and XP. I've installed ...
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46 views

How can I boot Windows 95 on a VM directly from the hardware?

I have an Asus Eee PC X101ch with an Intel Atom N2600. I need to run Windows 95 on it, but it doesn't work natively. Only through a VM. Is it somehow posible to boot to a virutal machine? Like: ...
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39 views

Free Windows Virtual Machine Images?

I came across this tool called vagrant up and in the documentation it points to a list of freely available virtual machine images which includes windows. Does that mean that we can run windows for ...
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1answer
29 views

Relationship between OpenStack and Xen

Xen is an open source virtualization platform that allows you to install a bare metal hypervisor on a machine, which turns it into a host for other guest VMs. I can't really understand what ...
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5 views

Xen Virtualization Types by Example

Please note: I first tried searching for an SE site where virtualization-centric questions were directly on topic. I found Virtualization, Cloud and Grid Computing, but to my surprise and dismay, see ...
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24 views

Processes surviving Windows VM reboot? [migrated]

Summary: A long-running virtual Windows Server 2012 system this weekend became very slow; from remote we did Restart-Computer -ComputerName xyzzy -Force, which succeeded by all accounts; except that ...
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8 views

Calling guest scripts in Oracle VirtualBox

I'm using Oracle VirtualBox. I want to run a script from the host computer to execute the following steps: Start the virtual machine Execute a script on the virtual machine Close the virtual machine ...
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1answer
20 views

Configuring ESXi server to produce same performance results

I have an ESXi 5.5.0 server with a single VM. When I run some benchmark on the VM there are 6% differences between times of different runs on the VM (each run around 250 seconds). When I've run such ...
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8 views

Domain Admin Can't access VM after configuring RemoteApp

I configured a test VM (As a local admin) for remoteapp connections. Now that we've done our testing, we've found that we're unable to connect to the machine with our typical access. Even domain ...
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32 views

Virtualbox and Vagrant network configuration Windows 8.1

I'm trying to access a website on a vagrant box (Laravel Homestead) through port 8000 on my host but it always gives the ERR_CONNECTION_REFUSED error on Chrome and IE. I have tried multiple setups, ...
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34 views

Why Ubuntu VM on Parallels has a blurry look on Macbook Pro Retina?

I've installed Ubuntu in a Macbook Pro Retina. It looks terrible, though, even after adjusting the resolution to 2880x1800: Why this is happening? I have already enabled Retina resolution on ...
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1answer
42 views

VirtualBox USB Support, USB Drive is NOT working, detected or recognized

I'm using latest stable version of Oracle VM VirtualBox with VirtualBox Oracle VM VirtualBox Extension Pack on CentOS Linux release 7.0.1406 (Core) (Linux 3.10.0). My Virtual Machine's Operating ...
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2answers
41 views

Execute command on linux virtual machine (or server) from windows commandline

I usually use software on a windows machine, but now need to call one commandline executable that I only have a Linux version of. I installed a linux virtual machine, but I would like to be able to ...
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23 views

After entering UserName/Password FTP server is not responding?

I have set up a Azure VM with Windows Server 2012 R2. I have also setup IIS 8.5 FTP server there. When I access the site using localhost url in the same server, I will get UserName/Password prompt and ...
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17 views

Wordpress + Virtualbox using virtual host

I'm trying to figure out how to test a development Wordpress site using Virtualbox and so far have not seen an answer to my specific problem. My setup: Using MAMP with a virtual host on OSX Virtual ...
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1answer
31 views

Copying an image from the internet and pasting it results in a CID attachment style image

I am having an issue where if I copy and paste an image from the internet on a virtual machine, and paste it to an email on a virtual machine, it is adding it as a CID attachment, instead of a linked ...
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1answer
11 views

Connecting a QR reader to Linux

I am trying to connect a QR Code reader via USB to my linux (Debian 5) running in a VM. Here are the tailored outputs of various commands: dmesg $ dmesg [ 1141.368166] usb 1-2.1: new full speed USB ...
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14 views

VM image copied as bridge adapter creating IP conflict while starting new VM from copied image

I copied one centos6.0 VM image whose network was bridged connected to host. When I copied that image in another host & started on VM-Player 5. original VM is also running on VM Player 5.0 too. ...
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43 views

How can I start a 256 color game on a Virtual Machine with Win XP?

(Note: I am from Germany and have my system on german language, so if i my translations of the Buttons and stuff i get on screen seem strange to you pls let me know) I wanted to play a old pc game of ...
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28 views

Why does my keyboard light up when I start Windows?

I've got Windows 8.1 installed on my MacBook Pro Late 2013 Retina 15" via bootcamp and every time I choose Windows my keyboard lights up. It doesn't occur when I choose OS X. How do I disable it?
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204 views

virtualbox windows 10 guest stuck at low resolution on ubuntu host

I am running Ubuntu 14.04 as a host and Windows 10 as a guest in Virtual Box. I used Windows 8.1 as the operating system type when I set up the box. Windows 10 runs fine. I was able to install Guest ...
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18 views

Emulate 512-byte sectors with Xen

Anyone know how to make Xen 6.2 emulate 512-byte sectors when exposing a drive to a virtual guest? This would allow exposing native 4kB sector drives to older virtual guests like Windows 2003/2008 ...
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1answer
63 views

What are the best settings for a Windows 8.1 VM in VMWare Fusion 7.1?

I have a MacBook Pro, medio 2012 with 2.3GHz Intel Core i7 and 8 GB 1600 MHz DDR3. VMware Fusion 7.1 is installed on this MacBook to run a Windows 8.1 VM. This VM is my working machine. I do not ...
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1answer
29 views

Is it posible to install debian as host and windows as guest and use nvidia drivers in windows “normally”?

i´m new in linux, but i started using debian in vmware. Now i have windows 7, and debian as a virtual machine. But I really liked that i can personalize a lot debian, so I decided to use definetly. ...
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35 views

Microsoft Virtual Machine Bus Network Adapter - Code 10

System Specs: I'm currently running a Dell laptop m3800 with the Intel Dual Band Wireless-AC 7260 adapter, 16 GB of RAM and Windows 8.1. Within this laptop, I'm running a Server 2008 R2 Standard ...
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11 views

Virtual machine adapter status no communication

I need help on virtual machine settings as I tried to ping it says "destination host not reachable". When I checked Virtual machine it says Status "No Communication" and "IP address blank". Can anyone ...
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1answer
17 views

Dismiss low disk space prompt (Suspend, Power Off, Continue)

I'm running a Windows 7 virtual machine under VMware Fusion 5. The VM is out of disk space, and I'm getting the following prompt: The prompt says: VMware Fusion has paused this virtual machine ...
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17 views

ESXi and port forwarding issues with a virtualized server

I recently installed ESXi and started virtualizing my network. I started with three physical servers: 1- Dell Poweredge R210 running pfSense 2.3 2- Dell Poweredge R210 running Windows Server 2012 R2 ...
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1answer
23 views

What is the use of VmWare Virtual network adapters

I had VmWare Workstation for times ago and one day I noticed that my laptop is not going to shutdown or hibernate or sleep normally and it got stock turned on and with screen turned off which I had to ...
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27 views

How to have access to iis server inside VM with Bridged connection

I have a LAN, and I have several machines connected to that LAN. In one of the machines i have a VM that has installed Windows Server 2012 R2 and has several iis sites running in it. I want to have ...