My solution  I tried to use VirtualBox to simulate , but experienced problems (see below). My solution was to use Hyper-V (as answered in  comment). How to access Hyper-V: Type in the Start Menu search Hyper-V Manager.  My problem  I'm using Windows 8.1 Pro x64 build 9600. My goal is to simulate Windows 10 Technical Preview x64 on VirtualBox. I downloaded VirtualBox 4.3.16 from . This is my system information:  Steps i've tried:   I enabled virtualization:   I executed command in CMD: "C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" modifyvm "Windows 10" --longmode on I enabled Hyper-V feature:  I also tried to use a 32-bit ISO of Windows 10 Technical Preview. If the status of Hyper-V is  or , I get the following error when I start simulating Windows 10 Technical Preview:  However, if I  Hyper-V, I get the following error:  If I hit Continue, the following error comes:    I still cannot use 64-bit operating systems:
71178
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 doesn't give me option to select "Ubuntu (x64)" as I have seen in other people's screenshots, only just "Ubuntu". As a result, the ISO can't boot. I tried in another PC and Virtual Box gives the x64 variants to most listed OS...  Control Panel shows x64 OS, x64 processor. My host laptop is a Sony Vaio VPCZ22UGX/N, Intel® Core™ i7-2640M processor. CPUz shows Vx-t is available on my processor, of course.  Here is what I tried so far:   I enabled IO APIC as required in the docs. I have virtualization enabled in the BIOS. It works fine in VMware. Check that Hyper-V is not running or even installed on my Windows. Same for VMware. I also tried running the command:  VBoxManage modifyvm [vmname] --longmode on    for that VM, but no change.. I think the issue is really that I can't select x64 variant of the Ubuntu OS for that VM. Other people seem to indicate that's a requirement, but I don't get that option for some reason.  I spent a lot of time and can't find what's wrong... Anyone knows what could be missing here?  Thank you very much!!  Eduardo
3904
I have a Windows XP laptop, in which I run VirtualBox with the latest Ubuntu, my hardware is little old, so running the latest version of Ubuntu inside Virtual box is kind of a hassle, very slow performances, even if all i'm doing is running the terminal and practicing Linux commands !  I tried DSL (Damn Small Linux) with my VirtualBox, very small distro (50 MB), I am satisfied with how faster is my system now, but I miss Ubuntu, moreover, DSL is missing too many commands, such as sed an many others that I can't remember.  Is it possible to run Ubuntu just in console mode, no GUI or minimum GUI...no nice effects no fancy graphics? A link / tutorial would be much appreciated.
79349
I have downloaded and installed the newest  for my Windows 7 (64-bit OS), but when I want to install 64-bit Linux, the New->Create Virtual Machine only displays 32-bit option, no 64-bit option. Could anyone give any clues about this issue? Thanks very much in advance!
12326
I am trying to install virtual box v4.3.28-100309 on a Windows 10 Host. The windows 10 insider preview installed is build 10130. When I try to install the virtualbox exe I am getting the following error:  Status: Rolling Back action:    And after this I get a dialog box:  Oracle VM Virtualbox 4.3.28 Setup Wizard ended prematurely    I am running Windows 10 on a i5-core processor with 8GB Ram machine and not a virtual machine.
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I've just installed Ubuntu 10.04 into VirtualBox on Windows 7.    Unfortunately the only options showing for screen resolution are 640x480 and 800x600 and the monitor is showing as 'Unknown'.  How would I go about upping the resolution to 1280x1024 (I'm on a 1600x1200 monitor)?   Update I tried mounting the VirtualBox 'Guest Additions' ISO (from the VBox 'Devices' menu) and doing sudo sh ./VBoxLinuxAdditions-x86.run  from the mounted drive, which gave 2 new listed resolutions after a reboot (1024x768 and the 16:9 version of that resolution). These worked when I selected them but disappeared when I switched back to another resolution. I tried rebooting and running VBoxLinuxAdditions-x86.run again but onlu the 2 low res options listed this time. I think I'm going to reinstall...    Seems to be a VBox problem rather than an Ubuntu problem as after reinstalling 10.4 overwriting the original virtual partition, sudo sh ./VBoxLinuxAdditions-x86.run now has no affect at all.
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I have 5 computer systems in our small office. From my basic understanding of Virtualization technology, I think I can virtualize the 5 systems into one big virtual system. I wish to confirm this.  So, for example, if I have 3 GB of RAM and 2 cores on each system, my question is:-   Can I make one big virtual system which will have 15 GB of RAM (3 * 5 sysems) and 10 cores? If the answer to the above question is yes, which is the best free and Opensource software/hypervisor to do this? Can Oracle VirtualBox be a good candidate?   I am a beginner in Virtualization technology so please pardon if the questions are too simplistic/nonsense.
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I am using my first VirtualBox VM in order to run Windows 8 Preview on my Windows 7 machine.  It looks like only a few resolutions are available for me to choose.  My physical display is 1600x900, so I'd like to be able to set my Windows 8 VM to that in order to have a fullscreen experience.  How do I add a 1600x900 to the choices I have in the "Screen Resolution" dialog?
108498
I am using Ubuntu 12.04. I want to install Windows 7 on my system from a CD through VirtualBox. I searched the detailed tutorials through google but I did not find one that worked.   So can some one kindly share any detailed tutorial or link which will really help me out.
108647
I have a VirtualBox virtual machine. The host machine runs Ubuntu. The guest (virtual) machine runs Windows XP. I googled this problem, and people claim that they fixed it by changing adapter type to NAT, but there is no such option for me:  Any idea? Update: It didn't work either, after just switching it to NAT. Here are the current settings (with all details shown):  Here's a screenshot of the guest showing some networking information: (Please note that this question is about how to give a VM Internet access in VirtualBox, so the presence of a picture of Windows doesn't automatically make this off-topic!)
12324
I am running on a dual core AMD E450 CPU. When I tried to run a 64-bit OS that requires hardware virtualization using VirtualBox, it showed me an error message that "AMD-V is not enabled".    My AMD processor is supposed provide AMD-V support, but I can find no option for enabling AMD-V in BIOS.    How can I solve this problem? How can I enable AMD-V for my CPU?  Thanks in advance  lscpu :-  Architecture:          x86_64 CPU op-mode(s):        32-bit, 64-bit Byte Order:            Little Endian CPU(s):                2 On-line CPU(s) list:   0,1 Thread(s) per core:    1 Core(s) per socket:    2 Socket(s):             1 NUMA node(s):          1 Vendor ID:             AuthenticAMD CPU family:            20 Model:                 2 Stepping:              0 CPU MHz:               1650.000 BogoMIPS:              3291.72 Virtualization:        AMD-V L1d cache:             32K L1i cache:             32K L2 cache:              512K NUMA node0 CPU(s):     0,1   EDITED:-  Error message from VirtualBox:-  Failed to open a session for the virtual machine XXX.  AMD-V is disabled in the BIOS. (VERR_SVM_DISABLED).  Result Code: NS_ERROR_FAILURE (0x80004005) Component: Console Interface: IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb}
120647
Is is possible to run a 64 OS in a virtual environment host that is 32 bit. Say for example, I am running Windows XP 32 bit. Would it be possible for me to run a 64bit OS using VirtualBox or VMWare. My processor is a 64bit processor with VT enabled.
31630
I installed Oracle VirtualBox on Win7, then I downloaded  from . After I installed Android x86-4.2 on VirtualBox from ISO and creating fake SD Card for it, I tried to run it, but when I started it I saw these lines in console:  Detecting Android-x86... found at /dev/sda1  ANDROID root@x86:/ #   And no thing else. I tried that some times but result is the same. How I can solve this problem?  Update: Even I waited more than 20 minutes and nothing happen!
9830
I'm trying to boot Canonical's Azure 16.04 .vhd file in a VirtualBox VM and it hangs at "non blocking pool is initialized".  It works in Hyper-V, so it may only be a bug in virtual box (5.0.20).
82808
I am running Ubuntu 14.04 from Windows, using virtualbox 5.0. I tried several options to make size of Ubuntu in virtual box larger, but none helped so far.   I am using latest virtual box with latest guest add on installed. sudo apt-get install virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11 I went to Ubuntu 'software and Updates' and made sure that under 'Additional Drivers' tab, 'using x86 visualization solution...' is active. In virtualbox window, under view->virtual screen 1, all 'resize to' options are disabled.   None of these options helped. This is frustrating. Any comments or help? Can the problem be I am using 64 bit system? Does this problem occurs in earlier/later versions? If not, please suggest a 'good' version of Ubuntu for virtualbox.
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I have successfully installed VMWare Workstation 10 on my laptop running Windows 10. The virtualized system is CentOS.  Could install guest system and run it  I could successfully install the system and all, but after upgrading to Windows 10 Anniversary Update, I get this:    Removed Hyper-V  I have uninstalled everything from the system concerning Hyper-V. I removed it from my computer and restarted several times. No luck.
44893
Someone told me that a virtualizing program like VirtualBox does not work like an emulator does in the sense that it doesn't emulate registers and uses the actual ones for the virtualized data that are on the CPU. Emulators must emulate the registers since they are mostly to execute software that depends on a foreign environment (e.g. a Genesis emulator needs Motorola 68000's registers and memory addresses, so developer must make these resources available as emulated registers).  My main question is, how is virtualization developed? How do we enable an entire OS to run as a process in a virtual machine, but get it to run independently while still making use of the actual CPU? I only know emulation, not virtualization, so if anyone could help that'd be nice!  PS: I am not asking solely what the difference is, but differences in how they run software.
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I am using Nvidia graphics card. I run Ubuntu 16 on virtualbox. Host OS is windows 10. Does it make sense to upgrade the graphics driver in my Ubuntu image running on virtualbox? My CPU also support integrated Intel Graphics.