Change Windows Boot Device from IDE to Virtio on KVM

0
16

In this tutorial, you will learn how to change Windows boot device from IDE to Virtio on KVM. IDE and Virtio are types of virtual disk controllers. They emulate the common hard disk controllers for physical devices. The type of the virtual bus/device controllers that you use while setting up a virtual machine will affect the performance of the VM in terms of data read write operations. Thre are other device controllers supported by KVM including SATA, SCSI, USB. Of all these, Virtio bus device controller provides maximum performance.

Change Windows Boot Device from IDE to Virtio on KVM

So, assuming that you have already installed and configured your Windows VM on KVM, and using IDE bus device controller, how can you change it to Virtio for better performance?

Change Windows Boot Device from IDE to Virtio on KVM

Well, as much it is easy to just change the disk bus controller from the virtual machine settings as shown below and apply the changes;

Change Windows Boot Device from IDE to Virtio on KVM

When you boot, it may fail with INACCESSIBLE BOOT DEVICE;

windows 10 virtio no boot device

So, in such situations, how can you proceed to boot your Windows system with Virtio disk bus type?

Install Virtio Drivers on Windows Systems

If you want to change your Windows boot device from IDE to Virtio on KVM, you first of all need to install Virtio drivers.

In this tutorial, we are going to use Windows 10 as a our Virtual Machine. However, the method of installing Virtio drivers is same across all Windows systems.

Thus, power off the virtual machine and change the boot device bus type back to IDE as it were before;

Change Windows Boot Device from IDE to Virtio on KVM

Once you change the bus type to IDE, apply the changes and boot the virtual machine.

Once the virtual machine boots;

  • Download the latest stable Virtio drivers  or you can download the most recent build of the ISO.
  • Open the Windows File Explorer and navigate to where you downloaded your Virtio drivers ISO file.
  • Double click the ISO file to mount it so you can be able to access the installer.
  • Once the ISO is mounted, double click the virtio-win-gt-x64 installer and follow the installation instructions.
install virti drivers windows

Configure Windows to Start in Safe Mode

In order for the Windows system to enable and load all the newly installed Virtio drivers, you need to configure it to boot in safe mode first.

To configure Windows 10 to boot in safe mode;

  • Open CMD as administrator
  • Run the command below;
bcdedit /set {current} safeboot minimal

You should see a message, The operation completed successfully.

Poweroff the VM once that is done.

Attach Virtio Drivers ISO to the Virtual Machine

Similarly, download Virtio drivers ISO file to your host machine and attach it to the VM;

Under virtual machine hardware information;

  • Click Add Hardware option at the bottom
  • Under Storage
    • click Select or create custom storage
    • click Manage… and navigate to where you downloaded the Virtio drivers ISO file to
    • change Bus Type to VirtIO.
Change Windows Boot Device from IDE to Virtio on KVM

Start the VM.

It will boot in Safe Mode and load all the necessary drivers.

Disable Safe Mode Boot

Once again, open CMD as administrator and disable safe mode boot;

bcdedit /deletevalue {current} safeboot

Similarly, you should see a message, The operation completed successfully.

Change Boot Device from IDE to Virtio and Start the VM

  • Shutdown the VM.
  • Remove that attached Virtio Drivers ISO file and apply the changes.
Change Windows Boot Device from IDE to Virtio on KVM
  • Change the boot disk bus type to Virtio and apply the changes;
boot device bus virtio

Apply the changes and start the VM after that.

And there you go.

You Windows virtual machine should now boot with Virtio disk with no error!

windows 10 virtio disk kvm

That concludes our guide on how to change Windows boot device from IDE to Virtio on KVM.

Other Tutorials

Easy Way to Extend KVM Virtual Machine Disk Size

Start and Stop KVM Virtual Machines from Command Line

Use VirtualBox VMs on KVM

LEAVE A REPLY

Please enter your comment!
Please enter your name here