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Easily convert vdi to vmdk images

Converting images from one format to another should not be that hard that’s why I wrote the article How to clone a vbox virtualbox disk and how to convert vdi to vmdk in Sun VirtualBox Vbox. Even though these articles have been written I still find a bit hard since there are other ways to convert VirtualBox to VMware.

In this article I am going to show how to convert vdi images to vmdk using the latest version of Oracle VM VirtualBox. This was tested using Windows although the steps should not change if performing them on a Linux machine.

1. If you’re running a Windows virtual machine make sure to uninstall Oracle VM VirtualBox guest. Go to the “Programs and Features” and unistall it.

2. Just to be safe make a backup of the current vdi. You can copy it to c:\\backup\\images

3. We will be using the VBoxManage command. First you need to identify the VM vdi file path of the VirtualBox machine you want to convert. To do so run the following:

VBoxManage list hdds

For a Linux OS you must run the following

$ /usr/bin/vboxmanage list hdds

4. Take notes of the VM vdi file path

UUID:        368116e4-1c4a-49c4-9723-0e973f072948
Parent UUID: base
Format:      VDI
Location:    C:\\Images\\VirtualBox_VMs\\Windows_XP\\Windows_XP.vdi

5. Convert your .vdi to .vmdk image

The syntax for VBoxManage is:

VBoxManage clonehd "<vdi file format>" <NewVM.vmdk> --format vmdk
VBoxManage clonehd "C:\\Images\\VirtualBox_VMs\\Windows_XP\\Windows_XP.vdi" WinXP.vmdk --format vmdk

The output will be similar to the one below:

VBoxManage clonehd "C:\\Images\\VirtualBox_VMs\\Windows_XP\\Windows_XP.vdi" WinXP.vmdk --format vmdk
Clone hard disk created in format 'vmdk'. UUID: 17c15f43-4d10-4b92-b8c7-9143d3c63a0a

6. Create a new virtual machine in VMware and replace the provided disk with the one created previously.

Gotchas: If you are converting a linux machine, you must change at the boot time to boot from root=/dev/hda1 instead of root=/dev/sda1. To do so in the grub menu, press ‘e’ and adjust root=/dev/sda1 to be root=/dev/hda1.

That’s it!

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