Step-by-step – KVM Installation in Debian Buster

Installing

2. 2. Pre-Installation Checks

   Then Check if KVM Can be Installed
   With:

   egrep -c '(vmx|svm)' /proc/cpuinfo

   If in Output > 0 then your Processor support Hardware Virtualization!
   (But on a PC you may have still to enable it on BIOS…)Now again, Install the needed Tool:

   sudo apt install cpu-checker

   And then Verify it:

   kvm-ok

   If it’s Good you will see:

   INFO: /dev/kvm exists
   KVM acceleration can be used
   

   Finally, if the answer is negative you can still use KVM but only in a Slow mode…

3. 3. Installing KVM

   Now you are Ready to Install KVM on Debian
   Now KVM should already be there, to Check for it try to load the Kernel Module:

   modprobe kvm

   Again on Intel Processors:

   modprobe kvm_intel

   But for AMD instead:

   modprobe kvm_amd

   Last, to Add the default Virtualization Frontend managing Stack run:

   sudo apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils

   Following Debian Documentation about KVM related Packages:

   • libvirt-clients libvirt-daemon-system provides libvirtd which you need to administer qemu and kvm instances using libvirt
   • qemu-kvm is the backend