5 virtual machine in which that kernel is running. The guest operating system is aware of the hypervisor and communicates through hypercalls to improve system performance. These interfaces require the guest operating system to recognize their presence and make use of them in order to leverage the benefits of communicating with the Oracle VM VirtualBox hypervisor. For more technical information and videos on this topic, visit VMware’s Technology Preview for Transparent Virtualization. 04 LTS is advertised to work with 1GB RAM, in my case it didn't work. 8, “VBoxManage modifyvm” . 6. 26. Chapter 6. x test Guest Additions, Nvidia graphics card, Paravirtualization: Hyper-V, VBoxSVGA, 3D Acceleration not enabled, View: Full. The data plane vNIC must use the paravirtual VMXNET3 driver because it has improved performance as compared to other virtual network interfaces. On x64, the register mappings depend on whether the caller is running in 32-bit (x86) or 64-bit (x64) mode. Paravirtualization refers to the software technique, which allows virtual machines to have a software interface, instead of attempting to emulate an entire hardware environment. And, an additional question. Tried using None for paravirtualization interface, doesn't help. Solution 1: Update Oracle VM VirtualBox and Windows. But the technology. Click OK. 6. 0. This is the default value used when creating new VMs. The result is a system in which all software capable of execution on the raw hardware can be run in the virtual machine. Haven't found C:Program FilesOracleVirtualBoxdriversvboxdrv directory ( drivers contains etwork , USB and vboxsup folders) and therefore had no chance to try reinstalling the VB kernel driver VBoxDrv. Disabled nested paging 3. Paravirtualization is faster in operation as compared to full virtualization. KVM provides paravirtualized devices to virtual machines using the virtio API as a layer between the hypervisor and guest. Hyper-V runs isolated virtual machines that are noninterfering with each other in terms of a partition formed of parent partition and child. by PeterUK » 17. This communication channel needs a 'language' to use, defined only by the type of OS running in the VM. Memory Management. There is little point in providing the guest OS with an API it doesn't understand. It is not possible to change paravirtualization interface type under VM "Settings - System - Acceleration" too - OK button remain disabled. The Xen paravirtualization. Additionally, reports the TSC and APIC frequency to the guest operating system. 9, “Network Settings”, Oracle VM VirtualBox provides up to eight virtual PCI Ethernet cards for each virtual machine. Best Answer. Paravirtualization means that the interface for these mechanisms are coordinated ahead of time between hypervisor and guest [10]. Lawrence Abrams. Hence, there is typically no need to install additional software in the guest (including VirtualBox Guest Additions) to make use of this feature. that worked. Kernel-based Virtual Machine (KVM) is a free and open-source virtualization module in the Linux kernel that allows the kernel to function as a hypervisor. This communication channel needs a 'language' to use, defined only by the type of OS running in the VM. Dec 2022, 04:03. KVM: Presents a Linux KVM hypervisor interface which is recognized by Linux kernels version 2. The hypervisor provides virtualized components (such as virtual CPU and virtual memory) to. These results show that compiling a Linux kernel with support for paravirtualization doesParavirtualization Interface: A paravirtualization interface is a specialized communication channel or set of APIs (Application Programming Interfaces) that allows a virtual machine (VM) to. Sorted by: 26. This approach helps the Intel TDX-architecture prevent the VMM from accessing any TD runtime state. A virtualized operating system can provide the same service but with the following advantages: Less hardware: You can run several operating system on one host, so all hardware maintenance will be reduced. separate kernel paravirtualization interface, called paravirt_ops, which made its way into the stable Linux kernel with the last update (2. c) On a Type 2 VM, a software interface is created that emulates the devices with which a system would normally interact. 1. As new vendors enter the space and attempt to differentiate their products, many are creating confusion with their marketing claims and terminology. also Acceleration is configured: Paravirtualization Interface: Hyper-V Hardware Virtualization: [x] Enabled Nested Paging. Select System ⇒ Acceleration Tab. This is the default option chosen while creating new VMs. Transparent paravirtualization means you can run . Changing the paravirtualization interface from Default (i. Full virtualization. I have toggled Enable Nested Paging on and off, and switched the Paravirtualization Interface alternatively to None, Default, Legacy, etc. The result was impressive — by getting rid of all the difficult legacy interfaces, they were able to make a fast, very lightweight hypervisor in under 70,000 lines of code. 0. 12 template) that makes USB3 mandatory. My take on this data is that the Gateway utilizes almost trivial Host resources, and that is the reason almost no differences are evident irrespective of the Paravirtualization Interface chosen. 4. paravirtualization interface between the TD and the VMM. You can do it by VirtualBox GUI (VM's Settings -> System -> Acceleration -> Paravirtualization Interface) or by using Vagrantfile: This will work not only for Windows Enterprise/Pro/Edu but also for Home Edition (with WSL2 as Docker Backend). Start the VM from full normal shutdown, not save-state. paravirtualization [11, 58], which makes the guest aware of the hypervisor. This technique of changing the interface to make it easy to virtualize they called paravirtualization. The 'Paravirtualization Interface' setting is for how the modern virtualization-aware OS communicates with the hypervisor, not the engine that runs the virtual machine. nate_tucson » 10. After that, AlmaLinux9 was able to run on my VM. Paravirtualization Interface is in Default mode by default. Even in applications the processor is able to match AMD's Zen 4 Ryzen 9 7950X flagship. Paravirtualization is an expansion of a technology that has existed for years in the . In addition to normal hardware virtualization, your processor may also support the following additional sophisticated techniques: Nested paging implements some memory management in hardware, which can greatly accelerate hardware virtualization since these tasks no longer need to be performed by the virtualization. VirtualBox Paravirtualization Interface. The license to begin getting developer support on Virtualbox starts at $6100 (that's $61 per license, 100 license minimum). Start the guest from full power off, not save-state. VirtualBox VM setup: 4 CPU , 4096 MB Memory, network adapter disabled, Hard Disk - SSD, Paravirtualization Interface – Default, Hardware Virtualization - Enable Nested Paging, Executing Engine - VT-x/AMD-V, Paravirtualization Interface - Hyper-V. Paravirtualization, sometimes referred to simply as PV, can run on system architectures. Paravirtualization is a technique that presents a software interface to a virtual machine that's similar but not identical to that of the underlying host hardware. I stopped the Win11 VM and changed this setting to match Win10 and now it seems to be working fine. This is the default option chosen when creating new VMs. interface changes, which in turn caused version depend encies between the guest op erating system kernel and the hypervisor. legacy. Top. System works for a few minutes before going unresponsive (up from less. In a paravirtualized VM, guests run with fully paravirtualized disk and network interfaces; interrupts and timers are paravirtualized; there is no emulated motherboard or device bus; guests boot directly into the kernel in the mode the kernel. p. txt file and the 7. Then it hangs. GIM (Guest Interface Manager): Provides support for various paravirtualization interfaces to the guest. VirtualBox enables the exposure of a paravirtualization interface for more accurate and efficient execution of software within a VM. This is necessary to access virtual machines through interfaces similar to the underlying hardware to optimize system performance. This provides an interface very similar to software running natively on the host hardware. log" (no other file) to a zip file. This masks off the VME bit in CPUID. Today, the benefits of paravirtualization are largely mitigated by its disadvantages when compared to full virtualization running on modern hardware with. Deploys container images that include the entire virtual environment. VMware proposes VMI as a paravirtualization interface for Linux that solves these problems. Press the Windows + S key to open the Search bar, then type cmd and right-click on the most relevant result to run it as an administrator. Sign In. VirtualBox 5 exposes a setting called "Paravirtualization Interface" that can improve performance for some specific guest operating systems. Using this interface, a paravirtualized Linux operating system will be able to run on any hypervisor that supports it. In addition to normal hardware virtualization, your processor may also support the following additional sophisticated techniques: Nested paging implements some memory management in hardware, which can greatly accelerate hardware virtualization since these tasks no longer need to be performed by the. I just got it fixed sorry to waste any time I just had to change my paravirtualization interface to default I changed it to KVM being told it runs faster on a Linux machine because it's kernel based and forgot i changed it for some reason it also. 0 or later. It enables high performance to execute guest operating system. Full virtualization vs. 25 Further reading p. Specifying none explicitly turns off exposing any paravirtualization interface. You can, you just won't be able to run VMs without nesting support in virtualbox. 00:04. Examples of paravirtualization are Microsoft Hyper-V and VMware ESX Server. Note if both VMs lose network or just one. The internal communication of the paravirtualized driver should be simpler, and should require fewer context switches than the emulated interface. Using this interface, a paravirtualized Linux operating system will be able to run on any hypervisor that supports it. The virtualization platform also provides a calling interface for these sensitive privileged commands. In my case, I can confirm that for all my VMs experiencing this problem, changing the Virtualbox setting "System -> Acceleration -> Paravirtualization Interface" from "Legacy" to "Default" enabled these old VMs to work again. Use the installation script from Howto: Create OSX ISO from the OSX Install app. Paravirtualization (PV) Paravirtualization is a concept introduced by Xen Project. Clock synchronization between guest and host does not work if paravirtualization interface is set to KVM or Default . mpack Site Moderator. Instead, it provides an interface to the virtual machine that is somewhat similar to the underlying hardware. If I set the paravirtualization interface to "default" or Hyper-V (which I guess is the default when windows 11 guest type is selected), then the Windows 11 guest hangs quite frequently. 3. VMXNET3 provides several advanced features including multi-queue support, Receive Side Scaling (RSS), LRO, IPv4 and IPv6 offloads, and MSI and. VirtualBox offers several options, and experimenting with these might help resolve the issue: Open VirtualBox and select the problematic VM. This rule is NON_COMPLIANT for an EC2 instance if 'virtualizationType' is set to 'paravirtual'. 0 or later. VFP supports two types of virtual network interfaces:Under the Security tab, use the up and down arrows to select USB Security, and then press enter. The license to begin getting developer support on Virtualbox starts at $6100 (that's $61 per license, 100 license minimum). Full Virtualization uses binary translation and a direct approach as a technique for operations. Xen systems are structured in which the Xen hypervisor is the lowest and most privileged layer. KVM, Hyper-V) in the VirtualBox VM settings is a guest OS dependent setting and has nothing to do with any underlying hypervisor. by birdie » 10. For one, it still requires the overhead of an emulated BIOS and. This is similar but not at all identical to the underlying hardware-software interface. However, the "Acceleration" details do show up on the VirtualBox dashboard screen on the right, under the System details. (An Ubuntu guest uses Default, which defaults to KVM. These interfaces require the guest operating system to recognize their presence and make use of them in order to leverage the benefits of communicating with the VirtualBox. 6. . by birdie » 10. Hyper-V. Paravirtualization is easy to implement and works well for. None: Turns off the paravirtualization interface; Default: This is the default option before you make your custom choice. The options available. Thank you, i have had the same issue on Oracle Linux 7 host with Server 2019 guest since 6. mpack Site Moderator Posts: 38847 Joined: 4. 04 LTS apparently doesn't like the 1GB RAM setting that is the default in VirtualBox. The new kernel code replaces nonvirtualizable instructions with hypercalls into an application binary interface (ABI). Xen. You do not have the required permissions to view the files attached to this post. Specifying none explicitly turns off exposing any paravirtualization interface. (* 'Paravirtualization Interface' is a comm channel for virtualization-aware OS's to talk to whatever hypervisor is running them, so they can run more efficiently. Problems with paravirtualization: Linux and the PV MMU. 1. VMI (Virtual Machine Interface) VMI is a virtualization feature built in top of the paravirt_ops paravirtualization implementation introduced in 2. Paravirtualization is a way to extend the life of legacy and custom applications that are only supported on older operating systems. 25 Further reading p. But if I set it to any other value, the problem goes away. 8 Get started with this Nutanix Community Edition installation guide p. Most modern mainstream guest operating systems, including Windows and Linux, ship with support for one or more paravirtualization. The options available are documented under the --paravirtprovider option in Section 7. VirtualBox 5 exposes a setting called "Paravirtualization Interface" that can improve performance for some specific guest operating systems. Xen, an open source hypervisor, incorporates paravirtualization. 0. GIM (Guest Interface Manager): Provides support for various paravirtualization interfaces to the guest. Linux guests can use the KVM API, Windows guests (Win8 and later) understand the Hyper-v API. Like Amazon, Rackspace, Oracle and. Paravirtualization is a virtualization technique that provides an interface to virtual machines that are similar to their underlying hardware. All you need is a kernel to act as the hypervisor, a guest kernel, and QEMU for device. KVM) to None in the Ubuntu VM caused host CPU usage for VBoxHeadless to remain in the 2-4% range when the VM was idle. Other users have reported corruption in Linux VMs running in Virtual Box on Hyper-v enabled -- resulting in total data loss of everything stored in said VMs. Im trying to get the GPU drivers installed, but It doesnt detect a amd gpu in the vm. txt file and the 7. Sep 2008, 16:09Conway’s Game of Life is a simulation over a grid of cells, each of which is “dead” or “alive”. Most mainstream, modern operating systems, including Windows and Linux, ship with support for one or more paravirtualization interfaces. With Intel VT-x, there are two distinct modes of CPU operation: VMX root mode and non-root mode. 5. For example, VirtualBox provides virtio network interface which entirely eliminates emulating network cards in the software given the guest can make use of the interface. Now boot Window 10 again and it should boot. Paravirtualized debugging significantly alter guest operating system behaviour and should only be used by expert users for debugging and diagnostics. The Preboot eXecution Environment (PXE, most often pronounced as pixie) specification describes a standardized client-server environment that boots a software assembly, retrieved from a network, on PXE-enabled clients. La paravirtualización es un tipo de virtualización en el que un sistema operativo invitado se ejecuta en un sistema anfitrión de forma que permite al SO invitado acceder directamente al hardware del anfitrión. 01:59 PM. In root mode, the CPU operates much like older generations of processors without VT-x support. For example, Nested Virtualization can be useful for: Running applications or emulators in a nested VM. The "paravirtualization API" selected in the VM settings is a pre-existing feature which selects an API which is presented to guests, it has nothing to do with how VirtualBox runs the VM. While Paravirtualization uses hypercalls at compile time for operations. Containers should still work. Paravirtualización. Java. 5. 4 installer from the AppStore. Right Click on OS image . Its using the windows 10 64bit preset with 12gb of ram. However, by default, VirtualBox will access Hyper-V API; if not, then setting the paravirtualization interface will do that. Display / Graphics Controller: set to VBoxSVGA. Therefore the VirtualBox host can only use Hyper-V backend to run it's VM guests. Top. Note that VMware ESX supports VMI, another paravirtualization interface, for guests (i. Using this interface, a paravirtualized Linux operating system will be able to run on any hypervisor that supports it. But it still leaves something to be desired. I have to try this possible workaround: michaln wrote: There is a possible workaround: VBoxManage modifyvm <vm> --cpuidset 1 00800f11 00000800 56d8220b 078bfbfd. The hypervisor determines the caller’s mode based on the value of EFER. You can select your Paravirtualization Interface in this tab. VBoxManage modifyvm --nested-hw-virt on. com Abstract Paravirtualization has a lot of promise, in par-ticular in its ability to deliver performance by allowing the hypervisor to be aware of the id-ioms in the operating system. Prior to joining the. * without a Network Manager. Check that VT-x support is enabled in the BIOS - you will need to see your PC's manufacturer help on how to do this and make sure that nothing else has an exclusive. I remembered Windows 10 did not install Hyper-V, so I went to "Add remove program features" (or similar) in the Control Panel and I checked the box for Hyper-V. ?Paravirtualization Interface. PVHVM mode allows 64-bit guests to run at near native speed, taking advantage of both the hardware virtualization extensions and the paravirtualized interfaces of Xen. Mac VirtualBox users will be happy to know that VirtualBox now runs natively on Apple Silicon ARM processors, including the M1 and M2. Only Microsoft can do that. 12. inf ; I really wonder where is this driver in that new version of VirtualBox (if it. KVM: Presents a Linux KVM hypervisor interface which is recognized by Linux kernels version 2. 0: Requires ESXi 5. Xen's hypervisor uses paravirtualization, a technique that presents a software interface that is similar, though not identical, to the underlying hardware. To use VMI, it must be enabled in your Linux kernel and for the ESX 3. VirtualBox allows exposing a paravirtualization interface to facilitate accurate and efficient execution of software within a virtual machine. 2 + Ryzen 3000. In paravirtualization, the guest operating system hosted by the virtualization platform needs to modify its operating system and replace all sensitive instructions with super calls to the underlying virtualization platform. Then I thought it might be the “paravirtualization interface” in Virtualbox. Choose what works best for you based on their use cases. If compiled manually (where possible), guest operating systems with Hypervisor support require more. By using hardware virtualization extensions and IO paravirtualization, Xen removes any need for emulation. Some modern guest OSs are Hyper-v/KVM aware. Feb 2020, 23:24. One possible cause of this problem is the Hyper-V conflict with VirtualBox. Dialed-back ambitions or no, VMI is set to enter. Hardware virtualization: Enable VT-x. Be informed that I have specific needs and my tests in the virtual labs are mostly oriented to the IT infrastructure and networking simulations. This is the default option chosen when creating new VMs. L. 0 Hope that helped! I am quite new to VirtualBox. - VMI has a rich and low level interface, which allows the kernel to. It's is a comm channel for virtualization-aware OS's to talk to whatever hypervisor is running them, so they can run more efficiently. (5/9) Configure LAN interface: make sure these details are correct (192. Through PDM, third-party developers can. This is working fine for me: Open your virtual machine settings, go to "System"->"Acceleration" and select KVM paravirtualization interface. (This is not the Hyper-V that blocks Virtualbox. Esto permite una comunicación más eficiente entre el huésped y el anfitrión, así como una experiencia. This is a bit a shot in the dark, but can you try different "Paravirtualization Interface" settings (in System -> Acceleration)?. VirtualBox offers several options, and experimenting with these might help resolve the issue: Open VirtualBox and select the problematic VM. Re-installed guest additions within windows 11 guest 4. Paravirtualization is the category of CPU virtualization where hypercalls are used for operations to process instructions at compile time. Solution 4: Set Paravirtualization Interface to KVM. Changed paravirtualization interface from hyper-v to minimal 2. 0 is the introduction of paravirtualization. All of the other Windows 11 systems that have experienced the issue have had Hyper-V set. Still, since no VTx interface is set for XP, you can change the value here to Hyper-V. You can configure the Virtual Box paravirtualization feature to present a Windows VM a Hyper-v interface even though your Virtual Box Host is running Linux -- it does not require you to be actually have Hyper-v running on your Host. GIM (Guest Interface Manager): Provides support for various paravirtualization interfaces to the guest. PVHVM mode allows 64-bit guests to run at near native speed, taking advantage of both the hardware virtualization extensions and the paravirtualized interfaces of Xen. Enabling and disabling "PAE/NX". Paravirtualization is a technique where the hypervisor exposes a modified version of the physical hardware interface to the guest VM. It has been tested with the Qemu, KVM, VirtualBox, and bhyve hypervisors. Post by hack3rcon » 31. Change the Paravirtualization Interface from default to none. Now thanks to the release of Microsoft’s latest Windows 11 operating system and Paravirtualization it is now possible to share a single NVIDIA graphics card with multiple users. Step 13. Some paravirtualized devices decrease I/O latency and. We can try changing it to Kernel-based Virtual Machine or KVM and see if it does the trick. Different settings might work here, too – I didn't investigate further. Sep 2008, 16:09 Primary OS: MS Windows 10 VBox Version: PUEL Guest OSses: Mostly XPmpack Site Moderator Posts: 38847 Joined: 4. x I saw various paravirtualization options in the "Acceleration" tab of my VM settings. Nested Paging and VPIDs. Improved performance. , Ubuntu Linux) that support it. Red Hat Training. In paravirtualization, the guest operating system is explicitly ported before installing a virtual machine because a non-tailored guest operating system cannot run on top of a virtual machine monitor (VMM). Now we’ll add another network device to the VM. My take on this data is that the Gateway utilizes almost trivial Host resources, and that is the reason almost no differences are evident irrespective of the Paravirtualization Interface chosen. Creates a file system. Paravirtualization interface: Default. Paravirtualization Providers 10. Paravirtualization techniques expose a software interface to the virtual machine that is slightly modified from the host and, as a consequence, guests need to be modified. Dec 2018, 10:05. PeterUK. Rather, you need to properly 1) enable hardware virtualization support in your system's BIOS, and 2) ensure Hyper-v is completely disabled on your Windows Host. This choice will help your Guest OS kernel work as intended with additional capabilities depending on your. System / Acceleration / Paravirtualization Interface: set to KVM. Click Ok to save the changes, then start the virtual machine again to see if the problem is now resolved. Power on the virtual machine. But this is not the same thing as running a Hyper-v hypervisor on your Host. 1. 1. CompatibilityIn a virtual environment, packet input and output capabilities play a significant role in the performance of the packet processing functionality inside the virtual machine, specifically the VFP VM. For further details. The legacy option is used for VMs which were created with older Oracle VM VirtualBox versions and will pick a paravirtualization interface when starting the VM with Oracle VM VirtualBox 5. Changed paravirtualization interface from hyper-v to minimal 2. 4. How much of a performance boost comes from. New comments cannot be posted. I had the same issue and actually found the problem for me (running HA 2021. September 11, 2022 Chris Normand 0 Comments. d) All of the mentioned. Leave it enabled. Paravirtualization. Although Ubuntu 18. Did the paravirtualization change to KVM work for you? I'm having the same problem with the exact setup, and I do hope the downgrade to 6. Try lowering the CPU core count even more ( to 9, for example). 7: Requires ESXi 6. None . Note. Hello. Oracle's development on free Virtualbox comes from developments on Oracle's pay-for virtualization system which is derived from Virtualbox. 6. When running Windows VMs Virtualbox uses Hyper-V. If I set the paravirtualization interface to KVM (which I guess is something that. Paravirtualization provides a fast and efficient means of communication for guests to use devices on the host machine. Again this won't work in VirtualBox (paravirtualization interface set to Legacy) or VMWare with setting "Virtualize CPU performance counters". This chapter provides additional information for readers who are familiar with computer architecture and technology and wish to find out more about how Oracle VM VirtualBox works under the hood. The primary benefit of paravirtualization is a much higher disk I/O performance. The paravirt-ops interface, which was developed by a joint team from IBM, VMware, Red Hat, and XenSource, incorporates many of the concepts of VMI including the support of transparent paravirtualization. Posts: 790. Paravirtualization is where the guest operating systems run on the hypervisor, allowing for higher performance and efficiency. The options available are documented under the --paravirtprovider option in Section 7. Click the Options table. Running multiple VMs at "decent speeds" will really depend on your hardware specs. 40. Our in-depth review confirms: Raptor Lake is the world's fastest CPU for gaming. Click on “Settings“. The following checkboxes are enabled in my GuestOS (Ubuntu) settings in the VirtualBox:Specifies one of the following paravirtualization interfaces to provide to the guest OS: none does not expose any paravirtualization interface. The Oracle problem is that it add "KVM" and "Hyper-V" in Paravirtualization Interface because of "Red Hat" and "Microsoft" but "Xen" is open source and not have any commercial sponsor, But if you open your eyes then you can see that many companies use Xen as Cloud. ESXi 6. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. Jan 2017, 15:38. In paravirtualization, the guest operating system is explicitly ported before installing a virtual machine because a non-tailored guest operating system cannot run on top of a virtual machine monitor (VMM). Description. For example, while hardware assist is a valuable technique that will mature and expand the envelope of workloads that can be virtualized, paravirtualization is not an entirely new technology. Xen has been extended to compatible with full virtualization using hardware-assisted virtualization. Ive got a windows vm in VirtualBox. Solution 6: Modify Paravirtualization. The 7. This proves vital to large organizations where one crash can lead to lost productivity further down the line. Follow. In certain circumstances paravirtualization can offer. 0 or later. Hardware interface components, including device drivers:. 7. Supported Guest Operating Systems. PDM (Pluggable Device Manager): An abstract interface between the VMM. Click the dropbox from the Paravirtualization Interface and select Hyper-V. 8. But now there is a small brakes in Guest OS. Is there a way to set this option in a Vagrantfile ? And in general: Is there documentation on how to set the acceleration settings via the Vagrantfile? Paravirtualization Interface: Hyper-V Pointless. 10 will kernel panic on boot. 0 or later. GIM (Guest Interface Manager): Provides support for various paravirtualization interfaces to the guest. If KVM does not work, try other options in Paravirtualization Interface and see which one works for you. AWS Region: Only available in Europe (Ireland), Europe (Frankfurt), South America (Sao Paulo), US East (N. In paravirtualization, the idea is to provide a simplified device interface to each guest. You can suggest an enhancement on the Bugtracker. e. Virtual Machine Interface (VMI) In order to address the issues described above VMware proposed a new guest-host interface,. As long as you enable VT-x/AMD-V, Proxmox should work fine in a Virtualbox VM. In fact, trying to start word is enough to systematically hang the guest OS. Selecting and deselecting "Live CD/DVD" under Optical Drive Attributes. Most mainstream, modern operating systems, including Windows and Linux, ship with support for one or more paravirtualization interfaces. Solution 2: Enable Hyper-V Windows feature. so im now on 6. Then shut down the guest from within the guest OS if possible. Whenever the guest attempts to do something that.