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home_server:home_server_setup:kvm [2023-07-29 Sat wk30 15:25] – [KVM Offline Backup] baumkphome_server:home_server_setup:kvm [2024-02-18 Sun wk07 18:09] (current) – [Change the Disk Allocated Size] baumkp
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 ====Windows10 on KVM==== ====Windows10 on KVM====
 +I have not used Windows on a VM now since circa 2021.  Just no need.  I do have a dual boot on my main desk top that I default to Debian testing and can boot to Windows 11 when I need to use Windows based software.  My sons all still use Windows exclusively on their computers and game consoles..... So I still have a family MSOffice 365 subscription.  This give access to MSoffice and 1TB of MS Cloud each.
 I had poor performance on Windows 7, 8/8.1, and 10 running on KVM a few years back.  A large frustration was that I could not seem to get more than 2 CPUs functioning on the Windows VM even though I assigned 4.  Performance was very poor, with CPU usage usually saturated with any use and relatively high even when idle.  I found out early that Windows has limitations on the number of CPUs that could be used; 1 on Home, 2 on professional and 4 on Workstation and more on Server versions, at least that was my understanding.  As I did not have a great need for the Windows VM I did not try too hard and basically did not use.   I had poor performance on Windows 7, 8/8.1, and 10 running on KVM a few years back.  A large frustration was that I could not seem to get more than 2 CPUs functioning on the Windows VM even though I assigned 4.  Performance was very poor, with CPU usage usually saturated with any use and relatively high even when idle.  I found out early that Windows has limitations on the number of CPUs that could be used; 1 on Home, 2 on professional and 4 on Workstation and more on Server versions, at least that was my understanding.  As I did not have a great need for the Windows VM I did not try too hard and basically did not use.  
  
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     *Next increase the allowed size of the vm disk: ''sudo qemu-img resize /path_vm/vm_name.img +20G''     *Next increase the allowed size of the vm disk: ''sudo qemu-img resize /path_vm/vm_name.img +20G''
     *We need to make a backup of the VM disk: ''sudo cp /path_vm/vm_name.img /path_vm/vm_name_backup.img''     *We need to make a backup of the VM disk: ''sudo cp /path_vm/vm_name.img /path_vm/vm_name_backup.img''
 +    *We can check the file system on the VM: ''%%virt-filesystems --long -h --all -a /path_vm/vm_name.img%%'', <fc #ff0000>//**we can also use this to confirm the correct partition to expand**//</fc>.
 +    *We the backup VM disk to create a new expanded drive: ''%%sudo virt-resize --expand /dev/sda1 /path_vm/vm_name_backup.img /path_vm/vm_name.img%%''
 +
 +The ''virt-filesystems'' command may not be installed by default and can be installed with the following ''sudo apt install guestfs-tools''  
  
 [[https://computingforgeeks.com/how-to-extend-increase-kvm-virtual-machine-disk-size/|How To extend/increase KVM Virtual Machine (VM) disk size]] [[https://computingforgeeks.com/how-to-extend-increase-kvm-virtual-machine-disk-size/|How To extend/increase KVM Virtual Machine (VM) disk size]]