====== Migrate from VirtualBox ======

===== Migrate Windows 7/10 Virtual Box =====

==== (Optional) Preparation ====
Cleanup disc space and remove all unnecessary drivers:
  * uninstall Virtual Box Guest Additions
  * Download and run registry file: [[https://pve.proxmox.com/wiki/File:Mergeide.zip|Mergeide.zip]]
  * Restart VM
  * ''sdelete -z c: d: e:''
  * Enable ''ClearPageFileAtShutdown.reg''
  * Shutdown VM

Now two methods are possible:

==== Importing only disc ====
Fastest method: create Proxmox machine and import vbox hard disc to newly created Proxmox VM.
  * Create new Proxmox machine with similar parameters to old one
    * [[https://pve.proxmox.com/wiki/Windows_10_guest_best_practices|Windows 10 guest best practices]]
    * Remove created Hard Disc (scsi0)
  * Import disc images (repeat for all VDI discs)
    * As RAW images with all benefits (compression, thin provisioning, snapshots) or ''rbd'' or ''local-zfs'' storage: <code bash>qm importdisk 701 WIN7_C.vdi local-zfs</code>
      * 21743 MB VDI compacted file occupied 15,2G on ZFS with compression ratio 1.24x
    * As QCOW2 files on every file storage: <code bash>qm importdisk 701 WIN7_C.vdi local -format qcow2</code>
  * Connect new discs into machine:
    * <code bash>qm set 701 --scsi<N> local-zfs:vm-701-disk-<N>,discard=on,size=64G</code>
    * NOTE: ''discard=on'' should be enabled for thin provisioned storage to reclaim unused space
  * Change SCSI to IDE/SATA:
    * For i440FX machine: Switch SCSI to IDE: <code bash>sed -i 's/scsi/ide/g' /etc/pve/qemu-server/701.conf</code>
      * Manually correct numbering conflict with IDE CD-ROM drive  * 
    * For Q35 machine: Switch SCSI to SATA: <code bash>sed -i 's/scsi/sata/g' /etc/pve/qemu-server/701.conf</code>
  * Setup correct boot order
  * Add one dummy (small size) hard disc to SCSI controller
  * Enable QEMU Guest Agent
  * Boot Windows, go to ''Device Manager'' and install missing drivers:
    * PCI Simple Communication Controller ''PCI\VEN1AF4&DEV_1003'' --> Virtio console ''vioserial''
    * Red Hat VirtIO SCSI pass-through controller ''vioscsi\w7\amd64''
    * ''NetKVM\w7\amd64''
    * (''PCI\VEN_1AF4&DEV_1002'') --> VirtIO Balloon Driver ''Balloon\w7\amd64''
    * vm generation id (''ACPI/QEMUVGID'') ''''
  * Shutdown machine
  * Switch disc controller from IDE to SCSI. Edit ''/etc/pve/qemu-server/701.conf''
    * Setup correct boot order

=== Issues ===

''Can't create IDE unit 1, bus supports only 1 units''
Q35 machine has only master IDEs. Use ''sata0'', ''sata1'' and so on.



==== NOT WORKING: Importing OVA file ====
  * **Very slow method**, exporting OVA needs to copy all discs into exported and well compressed file.
  * In VirtualBox choose "**File**" --> **"Export Appliance"**
    * select to export all network cards and MAC addresses
  * Proxmox cannot import OVA files directly. Please unpack it with command <code bash>tar -xvf WIN7.ova</code>
    * After unpacking, manifest file .ovf will be available.
  * <code bash>qm importovf 701 ./WIN7.ovf local-zfs --dryrun --format qcow2</code>
    * WARNING: <code>warning: unable to parse the VM name in this OVF manifest, generating a default value</code>
    * Create account/Login to VMWare page and download [[https://my.vmware.com/group/vmware/get-download?downloadGroup=OVFTOOL440|ovftool]]

T.B.C without success, more similar issues described here:
  * [[http://www.baconapplications.com/export-a-virtualbox-machine-to-vmware/|Export a VirtualBox Machine to VMware]]
  * [[https://www.maketecheasier.com/convert-virtual-machines-vmware-virtualbox/|How to Convert Virtual Machines from VMware to VirtualBox and Vice Versa]]