I will walk through copying a bootable Windows 7 installation from a VirtualBox VM to real iron.

  • Insert an external hard drive in the USB port and share it with your Windows 7 VM.
  • Ask windows to make a system image "Control Panel -> Back up your computer -> Create system image", and save it to the external hard drive.
  • Boot the Windows 7 install disk, click through, and select "Repair windows installation". The drives that you do not put on the exclude list, will be repartitioned and formatted, so make sure to exclude everything you want to keep.
  • Let it chew on your backup, and when done, boot Windows.

I had an installation of Lunar Linux, that I wanted to move from VirtualBox to KVM, and therefore had to convert the imagefile. I searched high and low, but found no up to date instructions on how to do this. | In the old days there seem to have existed a tool called "vditool", but now "VBoxManager" will do the trick of converting a VirtualBox .vdi image into raw format. Here are the steps that I took:

  • Find the UUID of the VirtualBox disk image:

    oblivion@mastermind ~/.VirtualBox/VDI $ VBoxManage list hdds 
    VirtualBox Command Line Management Interface Version 2.1.2
    (C) 2005-2009 Sun Microsystems, Inc.
    All rights reserved.
    UUID:         e4e316cb-ad9f-46ae-b15c-164b893371cb
    Format:       VDI
    Location:     /home/oblivion/.VirtualBox/VDI/lunar.vdi
    Accessible:   yes
    Usage:        Lunar (UUID: d249a972-f112-4cbc-91ce-389ce75e4fac)

  • Convert the .vdi file to raw format, using the UUID just found. Using VBoxManage's clonehd function the .vdi file is cloned into a raw image, in this case called lunar.img:

    oblivion@mastermind ~/.VirtualBox/VDI $ VBoxManage clonehd e4e316cb-ad9f-46ae-b15c-164b893371cb lunar.img -format RAW
    VirtualBox Command Line Management Interface Version 2.1.2
    (C) 2005-2009 Sun Microsystems, Inc. All rights reserved.
    0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
    Clone hard disk created in format 'RAW'. UUID: 5106c566-7188-4513-a416-73eb7a4e44a9

  • On my Gentoo Linux system, the converted image was saved in ~/.VirtualBox/HardDisks.

  • Convert the image to QEMU qcow2 format using qemu-img:

    oblivion@mastermind ~/.VirtualBox/HardDisks $ qemu-img convert ~/.VirtualBox/HardDisks/lunar.img -O qcow2 lunar.qcow2

From the utter silence of this command springs lunar.qcow2, ready for KVM!

Generated on 2018-05-03 01:14:21.914747